Yukon/Denali 2WD V8-4.8L VIN V (2005)
Drive Belt: Testing and Inspection
Drive Belt Falls Off
Drive Belt Falls Off Diagnosis
Diagnostic Aids
If the drive belt(s) repeatedly falls off the accessory drive pulley(s), this may be caused by a pulley misalignment.
An extra load that is quickly applied or released by an accessory drive component may also cause the drive belt(s) to fall off. Verify that the accessory
drive component(s) are operating properly.
If the drive belt(s) is the incorrect length, the drive belt tensioner may not maintain the proper tension on the drive belt(s).
Test Description
The number(s) below refer to the step(s) in the diagnostic table.
2. This inspection is to verify the condition of the drive belt(s). Damage may have occurred to the drive belt(s) when the drive belt(s) fell off the
pulley. Inspect the drive belt(s) for cuts, tears, sections of ribs missing, or damaged belt plys.
