I have a 95 cavalier and am currently replacing the pcm. It isn't located under the dash. It is in front of the right wheel. You have to jack it up remove the right front wheel, and splash guard. I also suggest removing the bumper for easier access. You may have the remove the horn assembly to remove the pcm. I ended up bending my because well I'm lazy and my horn was going to be a pain in the **** to remove plus it didn't work. You should see 2 or 3 wire connectors coming out of it. Make sure you label them before removing them. They should be label anyhow but just incase.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The computer or powertrain control module (pcm) on the 94 s-10 blazer should be located under the passenger side glovebox you remove the lower glove box screws (under the dash) then remove the pcm retaining nuts to lower it out of the dash I have found this easier if you take the passenger side seat out to give you more room to manuver on some of these it may also be located on the passenger side fender under the hood & near the shock tower it is large with a few big wire harnesses goin to it each harness is color coded to fit where it goes into the pcm
MOST COMPUTERS ARE LOCATED IN SEVERAL PLACES, FROM BEHIND THE GLOVEBOX, TO INSIDE THE KICK PANEL ON THE PASSENGER SIDE UNDER THE DASH! THE KICK PANEL WILL BE ON THE SIDE OF THE FLOOR, AND USUALLY HAS A SCREW IN IT TO ACCESS THE SIDEWALL!
You have to disengage the PCM (computer) wiring harness from the PCM as the PCM is removed from under the dash. The PCM connector is located on the firewall under the hood to the left of the brake booster, you'll see the a large retangular wiring connector (120 wires) with a single bolt in the middle. Unscrew the bolt, go back under the dash to remove the PCM.
if you want to replace the pcm you will need to program the pcm/ecu to communicate to other cumputer system, it is located at the right front side of your car, inside the front bumper, you need #7 and #10 socket wrench, lift the vehicle fror easy access