Namaste, iam William Ardizzone, Have a nice day.
How Do You Diagnose A 4Wd Problem? [Solved]
Turn your wheels all the way to one side and drive forward. You should feel the vehicle bind or resist rolling forward smoothly. If you can not feel the vehicle resisting during the turn then your 4WD is probably not working.
Diagnosing a 4WD Problem
2002 GMC 2500. 8.1L V8, 5 speed Allison, electronically controlled
4WD DIAGNOSIS
How to
Service 4wd Tahoe Suburban Silverado My Fix—don’t throw parts at it—diagnose it
My service
