How do you reset a GMC Envoy computer?

The lights will not come on with the battery disconnected, but any remaining power will drain. Wait five minutes and turn off the headlight switch. Connect the negative battery cable with an adjustable wrench. Drive the vehicle for at least 30 minutes to allow the computer time to reset.

Is there a problem with the 2004 GMC Envoy?

There is a technical service bulletin regarding this problem with 2004 GMC envoy. Actually there are 3 separate issues with regards to the elecronic tailgate. The reason why the dealers are backordered is the part you want keeps failing after a time of being installed.

Why does the service engine light come on on my GMC Envoy?

I have a 2005 GMC Envoy and have had it just over a year now. Can someone please help me understand why every time I get the oil changed, or have the truck serviced all together the “Service Engine Soon” light comes on shortly after and stays on. Sometimes it goes off and sometimes it stays on. Either way its driving me nuts!

Where is the negative battery on a GMC?

Locate the battery. The location depends on the make, model and year, but it will be in one of the four corners of the engine bay. Put the adjustable wrench on the bolt that holds the negative battery clamp on the negative battery terminal. Loosen the bolt, and remove the clamp. Hold the negative battery clamp and wait for one minute.

Are there any problems with my GMC Envoy?

I just made the last payment, so I’m ready for it to start giving me problems. It has less than 30,000 miles on it, so maybe I have a while for anything major to happen. 2006 Envoy the light rear lift door works fine. But the two side light do not come on as light or as stop light. Even the tow light connection work ok.

Is the GMC Envoy rear lift door working?

It has less than 30,000 miles on it, so maybe I have a while for anything major to happen. 2006 Envoy the light rear lift door works fine. But the two side light do not come on as light or as stop light. Even the tow light connection work ok. How do I go about checking the fuse or relay?

How to reset the engine control module ( ECU )?

The 2 most common ways to reset your car computer is by either unplugging the battery or by resetting the fuse related to the engine control module Will disconnecting battery reset ECU? Disconnect the battery and Switch the ignition key to the on position for about 15 minutes should reset the ECU