A/C issue 2005 GMC 4x4

Asked by Jourdan May 25, 2019 at 09:25 AM about the 2005 GMC Sierra 1500 STD 4WD Extended Cab SB

Question type: Maintenance & Repair

The air is cold but it just wont blow until you are
going down the highway 45+ mph. Once you slow
down it doesn't blow anymore!

1 Answer
64,560

firebird338 answered 4 years ago

Sounds like the A.C condenser coil is clogged with dirt and bugs causing no air flow across coils clean coils with garden hose and nozzle if radiator sets in front of condenser clean it also so that good air flow can get to condenser.

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