Skip to main content
  1. Leisure
  2. Autos & Motorcycles
  3. DIY Mechanic

GMC ac popping sound

See also

Dear Barbara,

I have a 2010 GMC truck and every time I turn on the AC unit there is loud pop. I was wondering if you can tell me what it might be. I took it to the dealer and GM said that it was normal.

Thanks Ernie

Dear Ernie,

I have seen this a lot. What's actually happening is the compressor is starting to lock up. The popping sound is the AC belt tensioner slapping when the compressor doesn't turn. Take it to GM and make them honor the warranty.

Thanks for writing in,





  • Hookah smoking
    Young adults believe hookah smoking pose no health threat
    7 Photos
  • Bikini body
    Get your bikini body while having fun outdoors this summer
    5 Photos
  • Scarlett Johansson
    Scarlett Johansson is the face of Perfect Mono: Dolce and Gabbana's first cream eyeshadow
    5 Photos
  • Summer dining events
    Solitude Mountain Resort is an amazing place to escape and enjoy delicious dining options
    6 Photos
  • Top outdoor activities
    Don't spend your summer indoors: Top outdoor activities to do with your significant other
    10 Photos
  • Summer beauty tips
    Use these tips to look and feel great in the summer heat and humidity
    10 Photos