Constant Noise

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Cause	Correction
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. Refer to Transfer Case Fluid Replacement .
Low gear oil level	Inspect the transfer case for leaks, repair as required. Refer to Transfer Case Leak Diagnosis , and Adhesives, Fluids, Lubricants, and Sealers .
Incorrect gear oil in the transfer case	Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers .
Worn propeller shaft constant velocity joints	Replace propeller shaft assembly. Refer to Propeller Shaft Replacement .
Worn bearing in the differential assembly	Repair or replace the assembly as required.
Loose driveline torque tube bracket or a worn bracket bushing	Tighten the bracket bolts or replace the driveline torque tube assembly as required.
Overheated rear drive axle clutch A chatter type noise during hard or heavy acceleration and/or low speed turns may be within the rear differential.	Rear drive axle clutch overheated or axle low on fluid. Refer to Symptoms - Rear Differential Carrier .
Bearing noise within the transfer case A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A grinding noise that changes as a transmission shift occurs is not within the transfer case. A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires.	Inspect for the proper fluid level. Fill, as required. Identity the location of the noise using the CH-39570 Chassis Ears. If the noise continues, repair or replace components, as required.
Gear set whine noise within the transfer case A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case A whine noise that changes as a transmission shift occurs is not within the transfer case. A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires.	Inspect for the proper fluid level. Fill, as required. Identity the location of the noise using the CH-39570 Chassis Ears. If the noise continues, repair or replace components, as required.