Here are GMC Sierra 1500 AC / heater problems, by model year. The most common Sierra 1500 AC / heater problems cost $1,200 to fix & occur at 71,000 miles. Click on a year below.

Worst Ac / Heater Problems
A/C not working 2014 GMC Sierra 1500
A/C not working 2015 GMC Sierra 1500
ac / heater malfunctioning 2004 GMC Sierra 1500