My wife and I just purchased an 02 envoy a few months ago. There are afew issues that I would like to take care of and have only seen one other post on here with no replies.

This is our first envoy, and so far we love it, even with these issues. I just discovered that the 4 wheel drive is not working. Is there an indicator on the instrument cluster that will tell me when it is 4 wheel drive? Would this be affected by the recall for the underdash wireing? Also the back up lights are not working. I have checked all the fuses, and the bulbs themselves.

All help will be greatly appreciated.

Welcome to the forum. The 4x4 switch is located in your center console, under the temperature controls, bottom left hand side. An orange light will tell you if you are in 4x4 or not. If your 4x4 is not working, it could be any number of things, although I know of no recall for a 4x4 related issue on the '02 models. I do recall reading that the selector switch is a common problem, and is probably your cheapest first option, short of having a mechanic look it over. I would think that if you just purchased the truck, the dealership where you got it should be responsible for it working (if the truck was purchased with a safety certificate). Not too sure on that one though.

I just had my transmission rebuilt on mine and the guys that did it said that my transfer case motor is bad cause my 4x4 isnt working either but mine also says service 4x4 on dash