Vehicle : 2005 GMC Envoy SLT 4.2 4WD 140k
Problem: 2 winters ago, while driving the truck in 4 HI at about 30 mph in the snow, the wheels (I assume front) abruptly locked up and made me spin out into a ditch. When I had the truck pulled out, i touched the gas, and the truck wouldn't move. When I would switch back in 2 wheel drive, truck functioned normally but now with front end noise, again when in 4 hi, nothing but a bunch of crunching noise from the front end.
I have taken it to a couple local shops, I have heard transfer case, 4 wheel disconnect and front differential. Both actuators are functioning properly, no 4wd light is on.
I used the offroadtb flow chart to diagnose the system, and the outcome is the 4 wheel disconnect, could it be all 3? I don't want to spend 4-500 on a 4 wheel disconnect, then another 1k on the differential, followed by another amount on the transfer case.
With all the snow we are getting in detroit, I would love to get the 4 wheel drive in the envoy functioning again.
All help and advice is greatly appreciated. Thanks Guys!
Paul
Problem: 2 winters ago, while driving the truck in 4 HI at about 30 mph in the snow, the wheels (I assume front) abruptly locked up and made me spin out into a ditch. When I had the truck pulled out, i touched the gas, and the truck wouldn't move. When I would switch back in 2 wheel drive, truck functioned normally but now with front end noise, again when in 4 hi, nothing but a bunch of crunching noise from the front end.
I have taken it to a couple local shops, I have heard transfer case, 4 wheel disconnect and front differential. Both actuators are functioning properly, no 4wd light is on.
I used the offroadtb flow chart to diagnose the system, and the outcome is the 4 wheel disconnect, could it be all 3? I don't want to spend 4-500 on a 4 wheel disconnect, then another 1k on the differential, followed by another amount on the transfer case.
With all the snow we are getting in detroit, I would love to get the 4 wheel drive in the envoy functioning again.
All help and advice is greatly appreciated. Thanks Guys!
Paul