2010 GMC Sierra Denali Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2010 GMC Sierra Denali

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2010 GMC Sierra Denali Problems

Contamination of extended life coolant
Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.
"No start" Caused By Failed Fuel Pump

The fuel pump may fail causing the engine to stall and not restart.

Service transmission every 30,000 miles

Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.

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2010 GMC Sierra Denali Reviews

6.2 liter sounds like a deisel-very noisy. 6 speed trans vibrates in 6th gear. Dealer said they all do that! Still trying to get fixed under warranty. DON'T buy a 2010 Sierra Denali!

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