Common questions

Why does the fuel gauge on my Chevy Trailblazer stop working?

Table of Contents

Why does the fuel gauge on my Chevy Trailblazer stop working?

Has the fuel gauge in your 2003-2006 Chevy Trailblazer stopped giving you accurate readings? Does it tell you you’ve got half a tank one minute, a quarter tank the next, then a full tank half an hour later? Well, you’re not the only one.

What do I do if my gas gauge is not working?

In most cases, to gain access to the fuel tank sending unit mount / fuel pump mounting hole, you’ll need to drop the gas tank down. Be sure to do this when there is either minimal gas in the vehicle, or it’s been siphoned out.

Why does my car’s fuel gauge keep resetting?

Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank. If this happens, reset your fuel gauge. Each make and model of car has its own specific instructions on how to reset the fuel gauge, but the process is basically the same.

What causes a bad gas gauge on a Chevy truck?

A poor ground or loose connection to a gas gauge is just as likely to cause problems as loose or dirty battery cables assuredly will with your starting system.

Has the fuel gauge in your 2003-2006 Chevy Trailblazer stopped giving you accurate readings? Does it tell you you’ve got half a tank one minute, a quarter tank the next, then a full tank half an hour later? Well, you’re not the only one.

What to do if your fuel gauge stops working?

If any gauges besides your fuel gauge have also failed, it’s pretty likely that your problem is an instrument cluster one. In that case, you can simply remove the instrument panel (we can give you detailed instructions on this) and send it to us – we’ll pay the shipping both ways – and we can replace the motors with new ones that won’t break down.

What kind of cars are affected by the GM fuel gauge issue?

The issue affects the 2005- 2007 Buick Rainier, 2005- 2006 Chevrolet SSR, 2005- 2007 Chevrolet Trailblazer, 2005- 2007 GMC Envoy, and 2005-2007 Saab 9-7. GM says 867,335 vehicles are potentially affected.

What are the symptoms of a bad fuel gauge sender?

Usually a bad or failing fuel gauge sender will produce a few symptoms that can alert the driver of a potential issue. 1. Fuel gauge behaves erratically One of the first symptoms of a problem with the fuel gauge sender is a fuel gauge that behaves erratically.

What is the fuel sending unit?

The fuel gauge sender, also commonly referred to as the fuel sending unit, is the component responsible for sending the signal that operates the fuel level gauge in the instrument cluster. The fuel sending unit is made up of an arm, float, and a resistor that changes according the position of the float.

When does the fuel pump sender need to be serviced?

The fuel sending unit is not a routinely serviced component, usually only serviced when it, or the fuel pump fails, however it does play an important role to the proper operation of the vehicle.

What should I do if my Chevy Trailblazer goes off?

To me, this worked very well! I have a 2008 Trailblazer LT , and recently after I start the vehicle, the heater,dashboard lights,alternator go off , the battery light comes on. After 2 to3 minutes everything come back to normal any ideas?

How to fix my 05 Chevy Trailblazer instrument cluster?

I need instructions on how to repair my 05 trailblazer insturment cluster if anyone has any that would be great trailvoy .com has the fix for this, it requires some soldering. Common problem that Chevy knows about and has a lawsuit against them for most of their vehicles except for the trailblazer and envoy…go figure.

When did my Trailblazer start having erratic gauge readings?

My 2004 Trailblazer, with only 29 K miles, started having erratic gauge readings (Volts and Temperature) last winter (2010-2011), right after snow had been piled up on the hood for a couple of days (I live a little south of Detroit, so this happens frequently), and I was really puzzled by this problem.

To me, this worked very well! I have a 2008 Trailblazer LT , and recently after I start the vehicle, the heater,dashboard lights,alternator go off , the battery light comes on. After 2 to3 minutes everything come back to normal any ideas?

I need instructions on how to repair my 05 trailblazer insturment cluster if anyone has any that would be great trailvoy .com has the fix for this, it requires some soldering. Common problem that Chevy knows about and has a lawsuit against them for most of their vehicles except for the trailblazer and envoy…go figure.

My 2004 Trailblazer, with only 29 K miles, started having erratic gauge readings (Volts and Temperature) last winter (2010-2011), right after snow had been piled up on the hood for a couple of days (I live a little south of Detroit, so this happens frequently), and I was really puzzled by this problem.

Where is the fuse on a trailblazer gauge?

Locate the fuse in slot 24. This is the instrument cluster fuse. Use a fuse puller tool to remove the fuse from the fuse block. Install a new 10A fuse into the TrailBlazer’s fuse block. Reattach the fuse block’s cover and close the hood. If the gauges are still malfunctioning, the issue may be the wiring.

How do you replace the instrument cluster on a trailblazer?

Disconnect all three of the wires at the rear of the instrument cluster and pull the cluster out of the TrailBlazer. Install a replacement cluster and attach all three wires to the new cluster. Reinstall the four cluster screws and the dash trim. Reattach the three screws to the dash trim.

If any gauges besides your fuel gauge have also failed, it’s pretty likely that your problem is an instrument cluster one. In that case, you can simply remove the instrument panel (we can give you detailed instructions on this) and send it to us – we’ll pay the shipping both ways – and we can replace the motors with new ones that won’t break down.

What does the gas gauge say on a 2005 Chevy Trailblazer?

This gauge flip-flops more than a politician during election season. Some report that the gauge says “empty” after a fill-up, while others report the gauge says “full” when they’re running on fumes.

What are the problems with a 2005 Chevrolet TrailBlazer?

Worst 2005 Chevrolet Trailblazer Problems #1: Fuel Gauge Not Working 2005 Trailblazer Average Cost to Fix: $400 #2: Instrument Panel Malfunctioning 2005 Trailblazer Average Cost to Fix: $400 #3: Speedometer Stopped Working 2005 Trailblazer Average Cost to Fix: $400

Is there a recall on the Trailblazer speedometer?

The suit included Trailblazers built during that time and, for several years, those experiencing trouble with the speedometer and other instruments in these vehicles could have the entire instrument cluster replaced at no charge, provided the vehicle had been in service for fewer than 7 years and had been driven less than 70,000 miles.

Locate the fuse in slot 24. This is the instrument cluster fuse. Use a fuse puller tool to remove the fuse from the fuse block. Install a new 10A fuse into the TrailBlazer’s fuse block. Reattach the fuse block’s cover and close the hood. If the gauges are still malfunctioning, the issue may be the wiring.

How big is the gas tank on a 97 Blazer?

Well we are back to the 97 Blazer with more fuel gauge issues. The issue is the gauge isn’t reading accurately once it gets down to 8 or 9 gallons of gas in the tank. The tank is a 19 gallon and it is in the very back because it’s a 2-door model.

What should I do if my gas gauge is not working?

Note that some self-test steps may stop the gas gauge at 1/4, 1/2, and 3/4, as well. Fuel sender test. The fuel sender test should be conducted when the tank is lower than HALF, to prevent fuel splashing. Start by making sure the plug is clean, dry, and free of corrosion. Make sure the pins are straight and that the connector is fully seated.

When did I Buy my 2004 Chevy Blazer?

Purchased 2004 Chevy Blazer LS, 2dr, 4wd on 07/30/11 from dealer with recorded 79,322 miles. Displayed current PA emissions and inspection stickers with dates 6/2012. Vehicle gas tank was filled immediately after purchase.

What happens when your fuel gauge is stuck on empty?

When the fuel gauge is stuck on empty, you do not get an idea of how much fuel is there in the fuel tank, and you may run out of fuel anytime. The most obvious symptom of a stuck fuel gauge is that the fuel indicator does not move, even if you fill several liters of fuel in the fuel tank.

Where is the fuel gauge in a car?

A fuel gauge is a component found in the fuel tank of almost every vehicle on the road. It is the component responsible to send signals that operates fuel level gauge of the instrument cluster. It is made up of a float, an arm and a resistor that is designed to change as per the position of the fuel float.

How does the resistance of a gas gauge change?

The fuel float contacts run on a potentiometer, or variable resistor, whose resistance changes depending on float level, effecting a change in output voltage. Some systems are wired so that high fuel level contacts the low-resistance section, gradually increasing resistance as fuel level drops.

Why does my gas tank gauge not move?

If the dash gauge now reeds empty, the gas tank unit is defective. If the dash gauge needle fails t move, the dash gauge is defective. If the gas gauge works, but reads lower than it should, check for defective wiring between the gas gauge and the tank sending unit.

Can a faulty fuel gauge cause an engine to stall?

There were 58 reported cases of engine stalling due to low fuel levels. GM dealerships will notify owners that, if they have a problem with faulty fuel gauges, the sensor will be replaced and GM will pay half of the repair cost.

What should I do if my gas gauge reads Full?

Turn the ignition on and if the needle reads full or above, the gauge unit is probably good and the tank unit or the wiring leading to it are probably the problem. Reconnect the tank unit wire to the gauge before proceeding. The next trouble-shooting task begins by disconnecting the wire to the tank sending unit.

What are the features of a Chevy Trailblazer?

1 LED foglamps 2 Heated power-adjustable, manual-folding mirrors with body-color caps 3 Silver-painted roof rails 4 Remote vehicle starter system

How much does a windy Chevy Trailblazer cost?

Includes $1,387 in cash and discounts. Includes $1,387 in cash and discounts. WINDY CHEVROLET INC. Includes $1,291 in cash and discounts. WINDY CHEVROLET INC. Includes $1,316 in cash and discounts. Includes $1,295 in cash and discounts.

How old do you have to be to get a Chevy Trailblazer?

Must be over 18 years old and a resident of the United States to enter the Chevy MyWay experience. Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner’s Manual for more information. With rear seats folded flat.

Are there any problems with the GM fuel gauge?

One of the more infamously problems with GM vehicles is a faulty fuel gauge that often leaves owners wondering just how much gas is left in their tank. One of the more infamously problems with GM vehicles is a faulty fuel gauge that often leaves owners wondering just how much gas is left in their tank.

What’s the problem with the twitching fuel gauge?

I’ve the same problem happening on the ‘burban. 1999 that was just purchased and the fuel gauge looks as though it’s had way way WAY too much coffee. When we actually first got in it the fuel was very low and the gauge actually started low then slowly rose up to full after a few slow minutes, kicked back down and then was all over the map.

What to do if your fuel gauge is stuck on empty?

Fuel gauge stuck on empty? Two ways to fix that- scrape up some cash and put gas in it, or if that doesn’t work, replace the fuel level sensor in the tank. Altogether, it took about 5 hours and $75. None of the auto parts stores had this sensor in stock, so it was an overnight wait for that.

One of the more infamously problems with GM vehicles is a faulty fuel gauge that often leaves owners wondering just how much gas is left in their tank. One of the more infamously problems with GM vehicles is a faulty fuel gauge that often leaves owners wondering just how much gas is left in their tank.

Fuel gauge stuck on empty? Two ways to fix that- scrape up some cash and put gas in it, or if that doesn’t work, replace the fuel level sensor in the tank. Altogether, it took about 5 hours and $75. None of the auto parts stores had this sensor in stock, so it was an overnight wait for that.

Why is my gas gauge not working at high fuel level?

Some systems are wired so that high fuel level contacts the low-resistance section, gradually increasing resistance as fuel level drops. The system thus outputs higher voltage at high fuel level, gradually dropping voltage as fuel level drops.

How does a fuel pump work on a gas gauge?

The fuel pump module includes the fuel sending unit, used by the gas gauge to detect and display fuel level. https://www.flickr.com/photos/3ndymion/33556245572. The gas gauge is a relatively simple circuit, but its simplicity means each component is essential to its function.

What causes the gas gauge needle to move?

The variations in the amount of fuel in the tank cause the arm to move. This changes the resistance of the tank unit, changing the amount of current at the gauge unit coils, which in turn moves the needle located between the coils.

Why is the fuel gauge on my car not working?

Some fuel gauges have an analog display while others have a digital or liquid crystal display. Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank. If this happens, reset your fuel gauge.

What happens if you reset your fuel gauge?

Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank. If this happens, reset your fuel gauge. Each make and model of car has its own specific instructions on how to reset the fuel gauge, but the process is basically the same. Step 1

Why does my Chevy Trailblazer not accelerate at high RPMs?

If your Trailblazer won’t accelerate, but the RPM’s go up it’s usually not going to be an engine related issue. Somehow, the power that your engine is creating is not making it to the rear wheels. This is typically a transmission related issue. Here are the most common cause of acceleration with the RPM’s going up: 1. Transmission Fluid Low

Why is the spark chain on my trailblazer not working?

The timing chain (or belt) is responsible for keeping the upper valve train synced with the crankshaft. This is vital for spark timing. If the timing is off a little and the engine still runs, the timing belt may have skipped. If it has jumped too much the Trailblazer may not even fire.

What to do if your coolant gauge is not working?

Using your coolant temperature gauge as an example, the diagnostic procedure involves locating and disconnecting the sending unit. With the ignition on, the gauge should register cold. If you connect the sending unit wire to ground, the gauge should switch to read hot.

How do you turn off the engine on a trailblazer?

Turn your TrailBlazer’s engine off. Pull on the hood release lever to the left of and below the steering wheel in order to open the hood. Secure it open with the prop rod. Remove the cover from the TrailBlazer’s fuse block in the engine compartment. Locate the fuse in slot 24.

What causes an oil pressure gauge to not work?

3 Common Oil Pressure Gauge Problems 1 Oil Pressure Gauge Not Working You will notice your gauge not working at all when it stays bottomed out whether the… 2 Oil Pressure Gauge Reading Too Low When your engine is idle or when you’ve just started your car, the oil pressure… 3 Oil Pressure Gauge Reading Too High More

Using your coolant temperature gauge as an example, the diagnostic procedure involves locating and disconnecting the sending unit. With the ignition on, the gauge should register cold. If you connect the sending unit wire to ground, the gauge should switch to read hot.

Who is the owner of the Chevrolet TrailBlazer?

GENERAL MOTORS, GM, the GM Emblem, CHEVROLET, the CHEVROLET Emblem, and the names TRAILBLAZER and EXT are registered trademarks of General Motors Corporation. This manual includes the latest information at the time it was printed. We reserve the right to make changes after that time without further notice.

When did I Buy my 2004 Chevy Trailblazer?

The hard-working TrailBlazer competes enthusiastically against the Ford Explorer and other midsize rivals in passing power, ride comfort and handling prowess. I purchased my 2004 Chevy Trailblazer in August and absolutely loved it. All of a sudden it went completely dead on me.

How big is the wheelbase of a Chevy Trailblazer?

A new series of radios incorporates XM Satellite Radio and Navigation Radio operation. Exterior The regular-length five-passenger TrailBlazer rides a 113-inch wheelbase and measures 191.8 inches long overall. The seven-occupant TrailBlazer EXT is 207.8 inches long overall and comes equipped on a 129-inch wheelbase.

Where can I find the owner’s manual for the Chevrolet TrailBlazer?

2021 chevrolet.com (U.S.) chevrolet.ca (Canada) Trailblazer Owner’s Manual 2021 Trailblazer Canada My Chevrolet App Download the my.Chevrolet App for full manuals and “how to” videos. The full owner’s manual is located with your vehicle infotainment system, if equipped.

1 LED foglamps 2 Heated power-adjustable, manual-folding mirrors with body-color caps 3 Silver-painted roof rails 4 Remote vehicle starter system

Must be over 18 years old and a resident of the United States to enter the Chevy MyWay experience. Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner’s Manual for more information. With rear seats folded flat.

Where can I find a Chevy Trailblazer near me?

No exact matches found For better results, try removing filters, or using the sorting menu. Includes $1,387 in cash and discounts. Includes $1,387 in cash and discounts. WINDY CHEVROLET INC. Includes $1,291 in cash and discounts. WINDY CHEVROLET INC. Includes $1,316 in cash and discounts.

How do you change the fuel filter on a Chevy Trailblazer?

Use a screwdriver to loosen the clamp that holds the fuel filter attached to the vehicle’s body. Take out the old fuel filter and insert the new one. Tighten up the clamp. Remove the caps on the fuel filter and insert the hoses back on the fuel filter.

Use a screwdriver to loosen the clamp that holds the fuel filter attached to the vehicle’s body. Take out the old fuel filter and insert the new one. Tighten up the clamp. Remove the caps on the fuel filter and insert the hoses back on the fuel filter.

Well we are back to the 97 Blazer with more fuel gauge issues. The issue is the gauge isn’t reading accurately once it gets down to 8 or 9 gallons of gas in the tank. The tank is a 19 gallon and it is in the very back because it’s a 2-door model.

Where is the fuel gauge sender located in a car?

The fuel gauge sender is a component that is found in the gas tank of most road going vehicles. The fuel gauge sender, also commonly referred to as the fuel sending unit, is the component responsible for sending the signal that operates the fuel level gauge in the instrument cluster.

Is the fuel level sensor on my GMC Envoy defective?

The fuel level sensor in these cars are defective. If you have a high-mileage vehicle some sat it’s best just to replace the entire fuel pump assembly. In May 2011, NHTSA [1] opened an investigation [2] into the 2005-07 Trailblazer as well as the GMC Envoy, Buick Rainier and Saab 9-7X.

Some fuel gauges have an analog display while others have a digital or liquid crystal display. Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank. If this happens, reset your fuel gauge.

What to do if your gas gauge is on empty?

For example, if the gas gauge needle remains on empty when the ignition key is turned to the “on” position and you are sure the gas tank is partially full, battery current may not be reaching the gauge. To check further, connect a jumper wire between the ignition switch and the dash gauge.

Where is the gas gauge located on a Chevy truck?

The gas gauge, often located in the instrument cluster, consists of two small coils spaced 90 degrees apart with an armature and a needle placed at the intersection of the two coils. A dampener is also located on the armature to prevent excessive needle movement on rough roads.

A poor ground or loose connection to a gas gauge is just as likely to cause problems as loose or dirty battery cables assuredly will with your starting system.

Why does my gas gauge read high when the tank is full?

A functioning sending unit will have a high resistance when the tank is full and a low resistance when the tank is empty. If the gauge reads higher than it should, make sure the wire attached to the electrical terminal on the tank sending unit is making a good ground connection.

The issue affects the 2005- 2007 Buick Rainier, 2005- 2006 Chevrolet SSR, 2005- 2007 Chevrolet Trailblazer, 2005- 2007 GMC Envoy, and 2005-2007 Saab 9-7. GM says 867,335 vehicles are potentially affected.

There were 58 reported cases of engine stalling due to low fuel levels. GM dealerships will notify owners that, if they have a problem with faulty fuel gauges, the sensor will be replaced and GM will pay half of the repair cost.

If the dash gauge now reeds empty, the gas tank unit is defective. If the dash gauge needle fails t move, the dash gauge is defective. If the gas gauge works, but reads lower than it should, check for defective wiring between the gas gauge and the tank sending unit.

What to do if your gas gauge is high?

If the gauge still reads high, try grounding the tank unit electrical terminal to a clean portion of the frame. If this brings the gauge to empty or below, the tank unit is OK, but there is a bad ground between the gas tank and the body or chassis (or less likely, between the tank unit and the gas tank).

What to do if your gas gauge reads lower than it should?

When the gauge reads lower than it should, check at the gauge by disconnecting the wiring from the tank unit. Turn the ignition on and if the needle reads full or above, the gauge unit is probably good and the tank unit or the wiring leading to it are probably the problem. Reconnect the tank unit wire to the gauge before proceeding.

Why does my gas gauge keep pegging full?

The gas gauge might interpret voltage feedback from a dead sender as FULL or EMPTY, consequently pegging the gauge no matter the actual fuel level. Circuit Problems can cause the gas gauge to stop functioning normally.

Why does the low fuel light come on even when the tank is full?

At this point, you find the strange behavior to the fuel gauge, which distracts and annoys drivers. This resistance is connected to the fuel gauge in the driver’s dashboard. The variables resistance translates into the wrong fuel readings, making the low fuel light stay on even when the fuel tank is full.

Why is my fuel level sensor not working?

If you still give you the wrong values, the fuel level sensor needs to be changed as soon as possible. One more reason that may damage the fuel level sensor is if the fuel tank cover has a very tiny ventilation hole. The role of this hole is to drain the overpressure.

How does the fuel gauge work in a car?

The fuel gauge in your automobile indicates the amount of fuel that remains in the gas tank. Some fuel gauges have an analog display while others have a digital or liquid crystal display. Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank.

What happens when your gas gauge is not working?

The gas gauge tells you how much fuel is in your gas tank and alerts you when it’s time to refuel. If your gas gauge is not working, the inaccurate information it provides may cause you to run out of gas unexpectedly.

What causes a fuel gauge to read full?

Fuel gauge stuck on full Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. A faulty fuel gauge resistor can send a bad signal to the instrument cluster which can cause the gauge to permanently read full.

Why does my gas gauge go from full to empty?

This will send the crazy signal to the fuel gauge. This would be the time you see the gauge going from full to empty on it’s own, or usually after you fill up your vehicle it will act up from the sloshing around of the gasoline. This can get quite annoying, and will leave you not knowing how much fuel you actually have.

How does the fuel gauge work on a car?

There is also a fuel level sensor, or you may know it better as a ‘sender’. It holds the float assembly along with a resistor board that has small little metal ‘fingers’ that touch the board and send the signal to the fuel gauge to display the proper amount of fuel in the tank.

Where is the fuel level sensor on a late model car?

I’ve been dealing with these type of problems since I got into the business almost two decades ago. The one common factor in most of these complaints is the fuel level sensor. Late model fuel injected cars and trucks all have their fuel pumps located in the gas tank. There is also a fuel level sensor, or you may know it better as a ‘sender’.

This will send the crazy signal to the fuel gauge. This would be the time you see the gauge going from full to empty on it’s own, or usually after you fill up your vehicle it will act up from the sloshing around of the gasoline. This can get quite annoying, and will leave you not knowing how much fuel you actually have.

There is also a fuel level sensor, or you may know it better as a ‘sender’. It holds the float assembly along with a resistor board that has small little metal ‘fingers’ that touch the board and send the signal to the fuel gauge to display the proper amount of fuel in the tank.

I’ve been dealing with these type of problems since I got into the business almost two decades ago. The one common factor in most of these complaints is the fuel level sensor. Late model fuel injected cars and trucks all have their fuel pumps located in the gas tank. There is also a fuel level sensor, or you may know it better as a ‘sender’.

Why are all of the gauges in my car not working?

There are a lot of different types of instrument cluster designs and configurations, but when all of the gauges in a car stop working at once, the problem is usually either a fuse or wiring problem. The first step in diagnosing this type of issue is to identify the fuse associated with the instrument cluster or gauges.

Disconnect all three of the wires at the rear of the instrument cluster and pull the cluster out of the TrailBlazer. Install a replacement cluster and attach all three wires to the new cluster. Reinstall the four cluster screws and the dash trim. Reattach the three screws to the dash trim.

What happens when you test the gas gauge?

Gas gauge test. When testing at the gas gauge, repeat the voltage check from the sending unit. The voltage should be exactly the same as when you tested at the sending unit. If the voltage is different, you likely have corrosion or poor wiring between the sending unit and the gas gauge.

Which is the best fuel sensor scooter float?

FUEL SENSOR SCOOTER ATV GY6 50-150CC 3 PINS TANK FLOAT ZNEN SUNL ROKETA BAOTIAN JMSTAR JONWAY TAOTAO BMS KYMCO TANK VIP BENZHOU ZNEN YIBEN BAJA JCL VENTO ETC. . Need help?

Are there any GM SUVs with faulty fuel gauges?

GM says 867,335 vehicles are potentially affected. NHTSA first opened an investigation into this issue in April 2011 after receiving over 5000 reports of incorrect fuel level readings, which could lead drivers to inadvertently run out of fuel.

Why is the gas gauge not working right?

Why is the Gas Gauge in My Chevy Truck Not Working Right? 1 Known Problems. The most common problem with the fuel gauge reported by Chevy truck owners is a complete failure to register the fuel level. 2 Causes. Over time, gasoline corrodes the fuel gauge sensor. 3 Solution. Disconnect the battery for 10 to 15 minutes. …

Usually a bad or failing fuel gauge sender will produce a few symptoms that can alert the driver of a potential issue. 1. Fuel gauge behaves erratically One of the first symptoms of a problem with the fuel gauge sender is a fuel gauge that behaves erratically.

When do you need to replace your fuel gauge?

If your fuel gauge behaves erratically or is stuck on full or empty, you may need to replace the fuel gauge sender. 1. Fuel gauge behaves erratically

Why is my speedometer, rpm gauge and fuel gauge not working?

Q: My speedometer, rpm gauge and fuel gauge are not working; possible gear slipping and high rpm. I recently had a used motor put in my vehicle about 6 months ago when there was an oil build up which is commin in this engine i guess, and a new starter about 6 weeks ago.

What to do if your Trailblazer gauge is not working?

Use a fuse puller tool to remove the fuse from the fuse block. Install a new 10A fuse into the TrailBlazer’s fuse block. Reattach the fuse block’s cover and close the hood. If the gauges are still malfunctioning, the issue may be the wiring.

There are a lot of different types of instrument cluster designs and configurations, but when all of the gauges in a car stop working at once, the problem is usually either a fuse or wiring problem. The first step in diagnosing this type of issue is to identify the fuse associated with the instrument cluster or gauges.

The fuel gauge in your automobile indicates the amount of fuel that remains in the gas tank. Some fuel gauges have an analog display while others have a digital or liquid crystal display. Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank.

The variations in the amount of fuel in the tank cause the arm to move. This changes the resistance of the tank unit, changing the amount of current at the gauge unit coils, which in turn moves the needle located between the coils.

For example, if the gas gauge needle remains on empty when the ignition key is turned to the “on” position and you are sure the gas tank is partially full, battery current may not be reaching the gauge. To check further, connect a jumper wire between the ignition switch and the dash gauge.

What causes a faulty gas gauge on a GM SUV?

General Motors has agreed to pay to repair the fuel gauges in several GM SUVs, following a defect investigation by the National Highway Traffic Safety Administration. Over time, the contacts in the fuel-level sensor could wear and cause an incorrect reading on the gas gauge.

How long does it take to replace fuel level sensor?

Two ways to fix that- scrape up some cash and put gas in it, or if that doesn’t work, replace the fuel level sensor in the tank. Altogether, it took about 5 hours and $75. None of the auto parts stores had this sensor in stock, so it was an overnight wait for that.

What should I do if my fuel pump does not work?

After mechanic replaced… After mechanic replaced fuel pump gas gauge does not work. Took my truck to mechanic for routine maintenance and he replaced the fuel pump. After I got the truck back and filled the gas tank I noticed the fuel gauge wasn’t reading correctly.

Is there a recall on the GMC Trailblazer?

GM’s number for this recall is 14291. General Motors LLC (GM) is recalling certain model year 2006-2007 Buick Rainier, Chevrolet Trailblazer and GMC Envoy vehicles, and 2006 GMC Envoy XL and Chevrolet Trailblazer EXT vehicles.

Why is the gas gauge on my truck not working?

Well the first two were aftermarket and when the problem persisted he finally switched to a Motorcraft pump. Then when he ordered the Motorcraft pump he initially told me that they had a different pump for each truck dependent on wheel base and wasn’t sure he was getting the right pump.

What causes a trailblazer to shake when idling?

Here are the main components of the ignition system, as well as what would cause them to make your Trailblazer shake when idling. Fouled plugs can cause a misfire, which in turn causes an idle shake. Spark Plugs – One of the absolute most common causes (if not the most common reason that your Trailblazer may be shaking) is the spark plugs.

What are the O2 sensors on a Chevy Trailblazer?

The oxygen sensors that are equipped in your Chevy Trailblazer are responsible for monitoring the exhaust to help the ECU determine the correct air/fuel mixture. Of all the sensors equipped in your vehicle, the O2 sensors may have it the hardest. They deal with super hot exhaust that can cover them in deposits that can leave them ineffective.

Why does my fuel gauge keep reading backwards?

However when I activate the sending unit to read a full tank,the fuel gauge needle actually moves toward the empty side of the gauge. In other words, the fuel gauge seems to be operating backwards! Please help an ol boy figure out what’s wrong.

Author Image
Ruth Doyle