Cobalt L4-2.0L SC VIN P (2005)
Drive Belt: Testing and Inspection
Drive Belt Falls Off
Drive Belt Falls Off Diagnosis
Diagnostic Aids
If the drive belt repeatedly falls off the drive belt pulleys, this is because of pulley misalignment.
An extra load that is quickly applied on released by an accessory drive component may cause the drive belt to fall off the pulleys. Verify the accessory
drive components operate properly.
If the drive belt is the incorrect length, the drive belt tensioner may not keep the proper tension on the drive belt.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This inspection is to verify the condition of the drive belt. Damage may of occurred to the drive belt when the drive belt fell off. The drive belt
may of been damaged, which caused the drive belt to fall off. Inspect the belt for cuts, tears, sections of ribs missing, or damaged belt plys.
4. Misalignment of the pulleys may be caused from improper mounting of the accessory drive component, incorrect installation of the accessory drive
component pulley, or the pulley bent inward or outward from a previous repair. Test for a misalign pulley using a straight edge in the pulley
grooves across two or three pulleys. If a misalign pulley is found refer to that accessory drive component for the proper installation procedure of
