Why is MY 1993 Blazer not shifting into 4 wheel drive?

On 1993-1994 s10 Blazers etc, the tccm (transfer case control module) looses ground. This causes it to work some of the time , or not at all. Ground black wires at tccm 10c, 12d,13d (the black wires) also you need a good neutral s/w , as it also completes the ground to engage Low range. tccm extreme R behind dash,

What is the shifting solenoid on a Chevy S10?

The shifting solenoid on a Chevrolet S-10 pick-up is designed to regulate when the transmission shifts. This solenoid is part of the electronic transmission control system, and is controlled by the powertrain control module, or PCM. The PCM actuates the shifting solenoid when it determines that an upshift or downshift is required.

Why is my GM truck transmission not shifting?

Your issue is a common one with the transmission in that truck (and many other GM’s that use the same 4L60E transmission). It is caused by the worn rings and hardened seals on the interior parts like the front pump and pressure control solenoid.

When to replace shift solenoids in GM 4L60-E?

TIP 4: If your transmission is slipping, replacing the shift solenoids, even if they’re fried will not solve the slipping issue. The 4L60-E transmissions uses several solenoids and sensors to control/activate its 4 gears.

Why does my 4 wheel drive not engage?

The transfer case could pose another reason why your 4 wheel drive fails to engage. This could be due to the vehicle not coming to a complete stop to allow it to engage. This is because the splined pin and gears of the actuator need to align 100% with the gears inside the transfer case.

What kind of Fuse do I need for my 2000 Blazer?

My 2000 Blazer works in all drives as long as i have 15 amp fuse it the slot , it (calls for 10 amp .) been all over the truck looking for bear wires an shorts , can’t find any , Any ideas? 29 people found this helpful. It will go into 4w when u push the 4w low, but when u push the 4w high button it goes back to 2w

What’s the best way to clean a 97 to 05 Blazer?

15 people found this helpful. If 97 to 05 blazer shifts into 4lo but not 4hi climb under with gunk carb cleaner, spray the shit out of it, scrub transfer case motor and linkage with tooth brush and spray it again. Works every time

Why does my Chevy Blazer not 4 wheel drive?

I Have A 2001 Chevy Blazer The 4×4 will not engage. I Press the 4×4 Auto, Hi or Low button on the dash they just keep flashing. you can here the transfer case engage, but It will not be in 4 wheel drive. I have tried driving around with the light flashing to see if it would engage it did not. please help me find out what this is.

Why does my GMC 4×4 won’t engage?

Not using 4wd is ne of the biggest causes of failure ! Take it to a mechanic. Everything’s a guess from here on out. @dagosa The new style transfer case’s like what in my 06 GMC, are not like the old style that you need to use once in a while. The new ones (been this way since the late 90’s) are shifted with motor on side of transfer case.

Where are the vacuum hoses on my Blazer?

Also check all the vacuum hoses from the actuator (under the battery tray) to the vacuum switch (middle of firewall) back to the vacuum reservoir (inside left fender?). When my Blazer was around 10 years old, the hose ends were showing signs of deterioration.

What should I do if my blazer has a column shifter?

In case it has a column shifter. This is the procedure from my 2000 Blazer Owner’s Manual Turn the key to OFF. Apply and hold the brake until the end of Step 4. Shift the transmission to NEUTRAL (N). you want. Have the vehicle fixed as soon as you can.

What does it mean when your car wont shift out of second gear?

To the TCM that can mean one of two things; either the sensor is bad, or there’s an internal problem with the transmission. Connect your scan tool and start the engine, leaving the transmission in PARK.

Why is my Blazer still picking up speed?

2) The Blazer still picks up speed and drives well except for the rubbing/vibration now. Would having pulled out and put back in the dash switches or being in such close proximity to the TCCM caused issues?

Why does my Blazer vibration go away when turning left?

You were RIGHT ON when you said that it was coincidental with having installed an amp. As an FYI for you and your readers: They diagnosed the problem as a bad bearing (driver side, front). They said the reason the vibration went away when turning left was because the weight of the Blazer shifted to the right side.

Why does my Blazer make a rubbing noise?

Anyway, I have this rubbing/vibration noise that just started; can feel it immediately even at low speeds, almost like driving with studded tires; gets louder the faster I drive. If I turn the wheel to the right, same thing; to the left… goes away.

Is the 4Lo button on a blazer working?

I also now notice (in testing it) that the Auto 4WD, 2HI, and 4HI buttons work, but that the 4LO button just blinks when pushed (in neutral). I have to push one of the other buttons to get out of it.

Why is my Chevrolet S10 4×4 not working?

(Diagnose and Fix) – YouTube Chevrolet S10 4×4 Not Working? (Diagnose and Fix) If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

Can a 4×4 truck shift into a 4HI?

Only it’s a 1996 S10 4wd pickup. the truck will shift into 4hi but will not engage. I’ve tried unplugging the Transfer case control module but that did not work. Any suggestions anyone? Alrighty, I took my truck into school today to try figure out the problem.

Why is my 4×4 not working at all?

When it came time to leave for the day, 4hi was no longer working. The only thing I can think of is that the metal plate inside the diaphragm has weakened and it will continue to bend. So I am going to get a new one as it has a warranty and see what happens.

What kind of wiring is in a 1985 Chevy Blazer?

WIRING INFORMATION: 1985 Chevy S-10 Blazer WIRE WIRE COLOR WIRE LOCATION 12V CONSTANT RED Ignition Harness STARTER YELLOW OR PURPLE Ignition Harness IGNITION PINK Ignition Harness ACCESSORY ORANGE Ignition Harness POWER DOOR LOCK (5-wire reverse polarity) LT.

What does DTC stand for on Chevy S10?

Power on the scan tool and select “PCM” from the main menu. Select “Transmission” from the PCM sub menu. Select “Clear all current and stored DTCs.” DTC is an acronym for “Diagnostic Trouble Code.” Disconnect the can tool from the vehicle and start the engine.

What kind of car is 1994 Chevy S10 Blazer?

Green 1994 Chevrolet S-10 Blazer 4WD 4-Speed Automatic with Overdrive 4.3L V6 SFI 4WD.GO TEAM SAVE MONEY! Recent Ar… more Buy your next car with confidence at Hertz Car Sales!

Is the Chevy S10 Blazer a good car?

When it comes to vehicles that truly cover every base, it doesn’t get much better than a Chevy S10 Blazer. Blazers are known for their spacious interiors, adjustable seating, and superior handling under a wide variety of different driving conditions, so they’re great family cars.

Are there aftermarket parts for the Chevy S10 Blazer?

Whether you’re looking to make your S10 Blazer better when it comes to handling inclement weather conditions, giving it a boost in the offroad capabilities department, or simply looking to trade up when it comes to a part that’s due for replacement, Chevrolet S10 exterior parts and upgrades can help you make it happen.

Is there a 2000 Chevy S10 Blazer for sale?

2000 Chevy S10 Blazer 4 door 4×4. Good body and paint. Alloy wheels. Good original interior. Full power 4.3L V6 Auto PS PB… more Please contact the dealership for more information on this vehicle! RUNS AND DRIVES STRONG NEW BATTERY… This is a classic piece for the car enthusiast. Beautiful piece…

When to replace the vacuum actuator on a blazer?

The vacuum lines should be completely flushed on this vehicle and there is likely a bad seal between the transmission and the transfer case. The vacuum actuator may need to be replaced in the future also due to the amount of transmission fluid in the actuator itself.

Why does my 94 S-10 not have 4 wheel drive?

I have a 94 s-10 and the 4 wheel drive does not engage. The selector light turns on and acts like its in but its not. Any ideas? thanks I just fixed the 4wd in my 96 today.

Is there a problem with my 4 wheel drive?

In my case, the vacum line popped off sometime while I was 2wd trail riding. I plugged it back in and it works like it was never broken. If not that, then there is a electric motor that shifts the transfer case into 4wd that could be burned out. If not that, maybe you need a new transfer case.

Is there a problem with my Chevy Blazer 4×4?

Yes my name is kyle and I have a 1999 chevy blazer 4×4 and i have the same tccm problems like everybody else but my only problem is that i need the new 32 pin femal plug and the 4pin female cause my tccm is in working condition. I can’t find then plugs and wires anyplace i know what are odds there.

Is the 4×4 light on on my Blazer?

I read what you said about the wires on the Blazer, but mine were not corroded. I took it off and cleaned it up anyway and it came back on, but as soon as I turned the key off she was gone again. I don’t have any lights lighting up on the 4×4 switches. Service 4X4 light is on in the dash. I don’t know what is going on.

Why is my Chevy S10 not swapping tires?

If the 3800 engine won’t swap,then how far can I bore the cylinders out and how much cam can I put in it, to get more power to the wheels. This tire size change seems to need more power to turn them especially off road and in the the snow and ice.

Why does transfer case pop out of 4WD?

As such, some vehicles may exhibit different symptoms. Another common problem is a transfer case that pops out of 4WD. The issue can be attributed to outside influences (e.g., a problem with the differential or driveshaft) or it might be due to an internal transfer case concern.

Is there an amp in the back of my Blazer?

Well, just before this starting happening, my son and I installed a sub and amp in the back of the Blazer.

Why is my transfer case not working in my car?

The issue can be attributed to outside influences (e.g., a problem with the differential or driveshaft) or it might be due to an internal transfer case concern. There are many reasons why a vehicle’s 4WD system won’t engage or disengage.

How does transfer case work on GMC Jimmy 4WD?

For 4Lo the transfer case has an encoder motor that is on the transfer case that engages a lower gear when you stop, put trans in neutral and push 4 lo and a clunk is heard. Again a sensor on the transfer case to tell TCCM it is engaged. Hope that wasn’t too confusing.

What kind of wiring is in a 1983 Chevy Blazer?

WIRING INFORMATION: 1983 Chevy S-10 Blazer WIRE WIRE COLOR WIRE LOCATION 12V CONSTANT RED Ignition Harness STARTER YELLOW OR PURPLE Ignition Harness IGNITION PINK Ignition Harness ACCESSORY ORANGE Ignition Harness POWER DOOR LOCK (5-wire reverse polarity) LT.

What’s the problem with my Chevy S10 GMC S15?

Moving slow, tranny in Neutral, push 4lo and most of the time it kicks into 4lo, sometimes both 4hi and 4lo lights stay on or all lights are completely off, in this case, it’s in 4lo but tranny won’t shift and runs about 3000 rpm at 5mph. A couple of times I’ve pushed the right combo of buttons and got 4hi to actually work.

I have a 94 s-10 and the 4 wheel drive does not engage. The selector light turns on and acts like its in but its not. Any ideas? thanks I just fixed the 4wd in my 96 today.

What happens when you slip the transmission on a Chevy S10?

When this happens, the tachometer jumps up as the RPM increases. Smell – As the clutches and bands inside the transmission slip, they create a lot of friction. This friction gets them hot and you may notice an egg-like smell.

When do torque converters lock on Chevy S10?

Modern torque converters use locking clutches to create a true 1:1 connection between the engine and the transmission. This helps fuel mileage. When they don’t lock, the engine RPM will be higher on the highway. Torque converters don’t typically lock until they are in overdrive or drive, or your S10 reaches a certain speed.

Which is the 3 button transfer case on the S10?

The 233 is the 3 button transfer case found in most S10’s it usually contains the “HD package” which includes a wider chain and 6 planetary gears. the 236 autotrac is the 4 button transfer case that featured an auto button that used clutches in the transfer case to engage 4×4 when it felt the wheels slip.

Why does my blazer have a bad bearing?

OK; got the Blazer back from the shop. You were RIGHT ON when you said that it was coincidental with having installed an amp. As an FYI for you and your readers: They diagnosed the problem as a bad bearing (driver side, front).

I also now notice (in testing it) that the Auto 4WD, 2HI, and 4HI buttons work, but that the 4LO button just blinks when pushed (in neutral). I have to push one of the other buttons to get out of it.

Well, just before this starting happening, my son and I installed a sub and amp in the back of the Blazer.

Why is my Chevy 4 wheel drive not working?

Problem with the system can often be related to knob settings. Turn the transfer case knob that’s to the left of the steering wheel to the two-wheel drive position that’s marked with a “2” and up-arrow icon if you experience a vibration in the steering when driving on dry pavement or making tight turns.

Why is my 4 wheel drive light not engaging?

If you don’t shift it into neutral, the 4wd light will continue to flash and won’t get into gear. Seems to be a common occurrence on these trucks. Dodge dealers recommend engaging 4-lo, then back in 2-wheel drive, then back in 4-wheel drive hi (4H). This sequence apparently resolves the problem.

What are the lights on a 4 wheel drive Chevy?

The lights will correspond to the “2” and up-arrow position for two-wheel-drive high, “4” and down-arrow for four-wheel drive low, and so on. Wait for flashing lights to stop before shifting the knob. Don’t shift the knob too frequently if the transfer case enters shift protection mode.

What are the up and down lights on a 4 wheel drive transmission?

Why is my Chevy Blazer not shifting into 4 wheel drive?

44 people found this helpful. sounds like a bad acuwater,locaded under battery tray,is a round plunger like deal has a rubber diaphram.replace this your 4×4 should work 40 bucks at chevy dealer. 32 people found this helpful.

Can a vacuum leak cause a check engine light?

This could result in fuel trim problems and a check engine light, possibly with Fuel System Rich DTCs, such as P0172 or P0175. Some older power steering systems idle-up the engine using a vacuum switching valve (VSV), but a vacuum leak might stall the engine during a parking maneuver.

What kind of engine is in a 1991 Chevy S10?

It’s a 1991 Chevy S10, 2WD P/U, 2.5L I4 engine with around 185,000 miles on it. It’s the Iron Duke engine, a throttle body injection motor. I’m not a mechanic, please forgive me if I use the wrong terminology.

Are there any issues with the Chevy S10?

After that it started having a number of other issues, such as power loss, really bad acceleration, stalling, and a really rough idle.

When do trannies start having 2nd gear shift problems?

Usually when those trannies start having 2nd gear shift problems it time for a rebuild. There were a ton of updates to the valve body in those that pertain to hard/late 2nd gear shifts. Have it scanned first, get back to us and we can go from there.

What kind of transmission does a Chevrolet S10 have?

The three-element torque converter coordinates with the trademark Simpson planetary geartrain, offering three forward levels and a reverse. Starting in the early 1980s, the system was gradually updated to include four-speed S10 transmission.

Can a car shift gears without a downshift solenoid?

Downshift solenoids are an important transmission component, and without them, the vehicle will not be able to shift gears properly, sometimes even to the point of rendering the car undriveable.

What causes a Chevy transmission to not shift?

Low transmission fluid level. Chevy transmission won’t shift, stuck in 1st gear or limp mode – Speedometer may also display zero at all times. It could be internal transmission failure, low transmission fluid, or faulty Vehicle Speed Sensor (VSS sensor).

Downshift solenoids are an important transmission component, and without them, the vehicle will not be able to shift gears properly, sometimes even to the point of rendering the car undriveable.

What was the problem with my 1994 GMC Sierra?

My 94 gmc sierra k1500 speedometer was acting up,brake light came on and it wouldnt shift into 3rd or od without slipping out of gear. Changed speedo sensor and cured all problems. 6 people found this helpful.

Why is my transmission stuck in limp-home mode?

Transmission is stuck in limp-home mode – Possible causes include low voltage or communication problems with transmission and engine control units.

Why is MY 1993 Blazer not shifting into 4 wheel drive?