AWD Vibration on Acceleration and Turns - kw accelerate alignment body boom drive exhaust frame front high LA1 noise propeller resonance ride shaft speed steering trim

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

Vibration or buzz in vehicle on moderate acceleration between about 30-60 MPH and on curves.

If an AWD Aztek has a vibration found to be a Third-Order tire and wheel vibration, it may be caused by excessive front drive axle angles only during moderate acceleration and cornering. Measure front suspension trim heights and compare to SI specification. It may be helpful to put a load on the hood or front of vehicle (oil-dry, salt, or sand bags might work) to test if lower trim height improves condition to determine what affects a softer spring may have. The stock springs may be a 5300 lb. spring (PN 22196625) and may be contributing to complaints due to their effective higher ride height. To improve the condition, replace both front springs with a softer 5000 lb rated unit, PN 8906180 (formerly 22196624) or a 4700 lb spring, PN 89060179 (formerly 22196623).

.

Please follow this diagnosis 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. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(01, 02, 03, 04 Pontiac Aztek)

.