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2012 GMC Sierra 2500 HD Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2012 GMC Sierra 2500 HD

2012 GMC Sierra 2500 HD Recalls

Vehicles equipped with a 6.6L diesel engine and dual fuel tanks are being recalled because the transfer pump that moves fuel from the rear tank to the front tank could cause the fuel gauge in show the incorrect fuel level. The engine could stall unexpectedly, increasing the risk of a crash. Dealers will inspect the fuel transfer pump and replace it as necessary to correct this concern. 

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