May 10: GM Argues Vacuum Pump Failure Lawsuit is Itself a Failure news | 3 days ago
April 5: GM Brake Master Cylinder Failure Lawsuit Names 5 Models news | 38 days ago
March 24: GM Recalls Chevy and GMC Trucks With Dual Fuel Tanks recalls | 50 days ago
March 1: GM Engine Failure Class Action Lawsuit Begins news | 73 days ago
February 28: GM Lifter Lawsuit Update: Motion to Sever Denied news | 74 days ago
GMC TSB #N202299520
2020 GMC Sierra 3500
TSB Document:
Affected Component: BACK OVER PREVENTION: BACK-UP ALARM
- Summary
- Customer Service Program - Certain vehicles may not have the backup alarm which should have been included the dealer kit. Dealers are to provide the missing backup alarm to the customer.
Click a tab for more information.




