A/C unit

Asked by Jun 30, 2012 at 03:25 PM about the 2000 GMC Sierra 1500 SL Standard Cab SB

Question type: Maintenance & Repair

A/C unit will kick on-off every 2seconds without cooling the truck, have checked the refrigerant and
appears full, suggestions?

3 Answers

765

by kickin on im assuming ur talkin about the clutch on the compressor, its supposed to do that even if ur truck had the a/c turned off to circulate the refridgerent, u could have a leak in the system thats the usual cause of "not cooling" try a quick seal kit and a couple cans of recharge, if that doesnt solve the issue, it will require further diag as to y the system is not operating

1 of 1 people found this helpful.
395

i would drain the system and then shot dye in the system and refill it and wait a week and get a black light and look and see if you have a leak

1 of 1 people found this helpful.
395

You might need a new ac compressor.

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