- 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 PCM controls the ground to the injectors. Does the check engine light come on for a bulb check when the key is turned on? Check ECM fuses in underhood fuse/relay center. There is usually 2 10 amp fuses protecting the PCM circuitry.
Do you have a flashing red light in the center of the top of the dash when trying to crank it ? Check starter relay in the in under hood fuse / relay box ! The PCM - powertrain control module controls it by supplying a ground to the control side ! Where the relay plugs into the fuse box are four sockets , two should have battery voltage , one should show continuity with ohm meter an one should show open or OL on ohm meter this is from the PCM . when you crank the vehicle over, if no problems with anti-theft system the PCM supply's a ground an the engine cranks over !
when you replaced your computer, did you remove the CHIP from the old computer ? to install it into the replacement computer ? if not ,thats your problem !!!!!!!!!!!!! you got ZIP, ZERO, NOTHING !!! BETTER GET YOUR CHIP BACK, IF YOU STILL CAN !
Have you ever had any work done in that area? Check all fuses and the back side of the fuse cover points you to what each fuse does. If you've had damage to the dash it is quite likely where your problem is.
i dont see why they would diag the pcm for the rear wiper, power from fuse to switch to wiper!! no pcm in between this operation. I would have had this fixed in a hour. Have mechanic pay for the bill to get it running. It was running fine when you took it there and only the rear wiper didnt work and now you are out of a vehicle and a tow bill at a hourly dealer cost. Best of luck to you 300.00 later.
To replace the blubs you have to take out the insterment cluster. This is done by romoving the light switch trim plate and disconnect the wirering harness. The remove the A/C heater control panel. Remove the plastic trim from around the insterment cluster. The unbolt and remove the insterment cluster and uplug the wires and the speedometer cable. This speedometer cables can be a pain in the **** but depress the spring clip and pull. The bulbs are accessed from the back of the cluster. Bulbs in this cluster don't burn out very often and if none of the bulbs don't work it probley isn't the bulbs. In this cause make sure the dimmer switch is turned up if it is play with the switch see if the dash light flicker. Oh also in the mauals they always tell you to disconnect battery when pulling electrial apart.
I know this might sound strange to you, but check the TAILIGHT fuse. Some GM cars suffer similar symptoms. Tailight fuse blows ( tailights inop and unknown to the driver ), and sort of like a warning of something wrong, NO DASH LIGHTS. Check this first. You still might have other probs