GM Tech Tip: Growl Noise Caused By Axle Nuts – UnderhoodService

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Engine Compartment

GM Tech Tip: Growl Noise Caused By Axle Nuts

To diagnosis the noise, re-torque the existing front axle shaft nut to 162 ft/lbs and test drive the vehicle. If the noise is eliminated, replace both front axle nuts with the updated part (P/N: 10257766). On vehicles equipped with the police package, add an additional Nord-Lock.

Underhood Service Staff Writers
By Underhood Service Staff Writers
Published:
Models: 
2006-2013 Chevrolet Impala
2014 Chevrolet Impala Limited
 
Problem: A driver may report that a growling noise is coming from the front of the vehicle. 
 
Cause: The condition may be caused by a loss of pre-load on the front wheel bearings due to the axle nut.
 
Correction: To diagnosis the noise, re-torque the existing front axle shaft nut to 162 ft/lbs and test drive the vehicle. If the noise is eliminated, replace both front axle nuts with the updated part (P/N: 10257766). On vehicles equipped with the police package, add an additional Nord-Lock. 
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Andrew Markel is the director of content for Underhood Service magazine. He has been with Babcox Media for 20 years. He is a technician and former service writer and holds several automotive certifications from ASE and ­aftermarket manufacturers.
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