Subject: | Light Duty Truck Rear Axle Lubrication Service Interval |
Models: | 2000-2006 All General Motors Light Duty Trucks, Vans and Utilities |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
The service information and owners manual do not show a service interval for the 7.6, 8.6, 9.5, 9.75, 10.5, and 11.5 inch rear axles with or without G80 (locking differential).
These axles do not need to be serviced under normal operation due to the synthetic fluid that is used from the manufacturer.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.