I have a 2002 GMC Envoy and just recently out in a used transmission. the universal broke one night and was forced to use in four wheel drive to get home. I fixed the universal issue and recently hit a very deep puddle where the computer got confused as to what gear I was in and was randomly shifting between 4 hi to 2 to all wheel to 4 low and 4 hi ect till it dried. now my issue is its binding now and then in 4 wd and sometimes the rear diff seems to slip is this a sensor issue or is it something more serious???
please help
please help