Cobalt L4-2.4L VIN B (2006)
Step 1 - Step 6
The numbers below refer to the step numbers on the diagnostic table.
2. The inspection is to verify the drive belt is correctly installed on all of the drive belt pulleys. Wear on the drive belt may be caused by
mis-positioning the drive belt by one groove on a pulley.
3. The installation of a drive belt that is too wide or too narrow will cause wear on the drive belt. The drive belt ribs should match all of the grooves
on all of the pulleys.
4. This inspection is to verify the drive belt is not contacting any parts of the engine or body while the engine is operating. There should be sufficient
clearance when the drive belt accessory drive components load varies. The drive belt should not come in contact with an engine or a body
component when snapping the throttle.
Drive Belt Falls Off Diagnosis
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 or 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
