Noisy in Drive

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Cause	Correction
DEFINITION: A noise heard during acceleration load.
Excessive pinion to ring gear backlash	Adjust the pinion to ring gear backlash. Backlash Adjustment (9.5 Inch Axle) , or Backlash Adjustment (10.5 Inch Axle)
Worn pinion and ring gear	Replace the pinion and the ring gear. Drive Pinion and Ring Gear Replacement (10.5 Inch Axle) , or Drive Pinion and Ring Gear Replacement (9.5 Inch Axle)
Worn pinion bearings	Replace the pinion bearings. Differential Drive Pinion Gear Bearing Replacement (10.5 Inch Axle) , or Differential Drive Pinion Gear Bearing Replacement (9.5 Inch Axle)
Loose pinion bearings	Adjust the pinion bearings preload. Pinion Depth Adjustment (10.5 Inch Axle) , or Pinion Depth Adjustment (9.5 Inch Axle)
Excessive pinion end play	Adjust the pinion end play. Pinion Depth Adjustment (10.5 Inch Axle) , or Pinion Depth Adjustment (9.5 Inch Axle)
Worn differential bearings	Replace the differential bearings. Differential Bearing Replacement
Loose differential bearings	Adjust the differential bearing preload. Differential Carrier Bearing Preload Adjustment (9.5 Inch Axle) , or Differential Carrier Bearing Preload Adjustment (10.5 Inch Axle)
Excessive ring gear runout	Replace the ring gear. Drive Pinion and Ring Gear Replacement (10.5 Inch Axle) , or Drive Pinion and Ring Gear Replacement (9.5 Inch Axle)
Low oil level	Fill the fluid level to specifications with the proper lubricant. Rear Axle Lubricant Level Inspection (10.5 Inch Axle) , or Rear Axle Lubricant Level Inspection (9.5 Inch Axle)
Wrong or poor grade oil	Drain and refill the system with the proper lubricant. Differential Oil Replacement (10.5 Inch Axle) , or Differential Oil Replacement (9.5 Inch Axle) .
Bent axle housing	Replace the axle housing. Rear Axle Housing Replacement