How does the Check Engine light work on a Cavalier?

The computer in the Chevrolet Cavalier stores codes and turns the check engine light on when one of the sensors malfunctions. The engine light alerts the driver to a problem, as not every sensor malfunction causes the vehicle to run poorly. You need a scanner to extract the codes from the computer, which you can find at most auto parts stores.

What is the fuse box diagram for a Chevy Cavalier?

Here you will find fuse box diagrams of Chevrolet Cavalier 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 and 2005, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Is there a destination freight charge on a Chevy?

So over the long haul, driving a Chevy is a quality decision. Awards based on 2013-2019 model year vehicles. *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles’ destination freight charges.

What’s the problem with my 90 Cavalier Z24?

Hey everybody my 90 Cavalier z24 automatic its v6 fuel injected has some problems. First to start i changed spark plugs and did a throttle body cleaner. heres the problem. The car starts and idles a little high a little above 1000 rps.

Where does the 5 volt reference circuit go?

The PCM supplies this 5 volts on this circuit. It goes to various sensors on the vehicle. Either one of these sensors is bad shorting this circuit out, the wiring is shorted or the PCM is just simply bad.

How to test the TPS on a Chevy S10?

The TPS is one of the easiest sensors to test on your 2.2L equipped Chevy S10 (or GM Sonoma). In this tutorial, I’ll show you the 3 basic TPS tests that you need to perform to find out if the TPS is bad or not. In case you’re wondering, the TPS is tested with a multimeter and while it’s still on your on pickup.

What happens if there are no 5 volts in the PCM?

If there is no 5 volts there, you will have to check for 5 volts coming out of the computer with the key on. If still no voltage coming out of the pcm on this circuit with the key on, then chances are the PCM is at fault and will need to be replaced. Ask Your Own Chevy Question Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 9 years ago Hello!

What is the Impala 3400.5 volt reference circuit condition?

Got an ‘03 impala 3400. 5 volt code and thermostat code. Got an ‘03 impala 3400. 5 volt code and thermostat code. Rough idle, hesitation, like a dead spot.

Where can I Find my GM trouble code?

If you own a 1982 to 1995 GM car or truck, you just might be able to read your trouble codes for free! If you have a connector like this under your dash, read on… (note: this connector may have a black plastic cover over it, so also look for a cover shaped like this, sorry for the messy wires here)

How are error codes stored in a car?

If they go out of that range, the computer makes a note of it and stores this as an error code. In a modern car, there can be hundreds of error codes, each one pointing to a specific issue. A mechanic—professional or skilled do-it-yourselfer—can access these codes to measure the overall health of the engine.

What does code 12 mean on GM OBD?

The system will enter the diagnostic mode. In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light. A Code 12 consists of one flash, a short pause, then two flashes in rapid succession.

What is the oxygen sensor code for a Chevy?

P1137HO2S Bank 1 Sensor 2 Lean Or Low Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Trouble Code P1138HO2S Bank 1 Sensor 2 Rich Or High Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Check Engine Light Code

What is the diagnostic code for a Chevy check engine light?

Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Chevy diagnostic trouble codes. Manufacturer Specific Codes P0342Camshaft Position Sensor A Bank 1 Low Input – Related Information P1031HO2S Heater Current Monitor Control Circuit Sensors 1

Where do I find the trouble code on my Chevy?

These are listed in numerical order for easy searching. When retrieving Chevy trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3.

How can I tell if my Chevy ECM is running?

Turn the Chevy’s electrical system on, but leave the engine off. An active electrical system means the ECM will also be up and running. Count the flash codes and record them onto a sheet of paper. The check engine light will flash the codes at you, in a series of long and short pulses of light.

What does the code 86 mean on a Chevy ECM?

Count the flash codes and record them onto a sheet of paper. The check engine light will flash the codes at you, in a series of long and short pulses of light. For example, General Motor’s code 86 will appear as eight long flashes, followed six shorter flashes. There will be a dark, silent pause between coding sets.

How do I scan the VIN code on my car?

The scan tool comes with a code sheet that lists the codes for each type of vehicle. Plug the code scanner into the data link port under the driver side dash, just to the left of the steering column. Turn the key to the “Start” position. Press the “Read” button on the scanner. The scanner will read the codes and display them on its screen.

Where is the code scanner on a car?

Plug the code scanner into the data link port under the driver side dash, just to the left of the steering column. Turn the key to the “Start” position. Press the “Read” button on the scanner. The scanner will read the codes and display them on its screen. Write the codes down. Turn the key to the “Off” position.

What causes a check engine light on a Chevy?

Most likely causes for this Chevy check engine light code include a faulty crankshaft position sensor, a wiring concern or an improperly installed distributer. A quick check on the crankshaft sensor is to monitor the RPM value with a scan tool while revving up the engine.

How to read a GM check engine light code?

It will look like Morse Code, but it isn’t, and is real easy to interpret. The first code that will flash will be a code 12. It will be “flash, pause, flash, flash, pause, pause,” and repeat the cycle three times. The ECMwill flash each code three times, and move on to the next. If you have no codes stored, it will keep flashing code 12.

Can a bad crankshaft sensor cause a check engine light?

Another issue of a potential problem with the crankshaft position sensor is an illuminated Check Engine Light. If the computer detects a problem with the crankshaft position sensor’s signal, it will activate the Check Engine Light to alert the driver of the problem. A Check Engine Light can also be set off by a wide variety of other issues.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.