gmfan454
I'm Awesome
- Joined
- Dec 11, 2012
- Messages
- 106
- Reaction score
- 3
Hello, I was wondering if anyone would know why when I engage the 4WD system in both 4Lo and 4Hi the front wheels do not spin correctly. The front wheels lock up and leave skid marks on the road. It went from working fine to that. Do the electric 4WD systems still use vacuum and if so, could it be that? It's a 97 ecsb 5.7 Z-71