GMC Sierra P Codes (Powertrain) P0100 - P0199 P0128

Browse GMC Sierra P Codes (Powertrain) P0100 - P0199 P0128 questions and answers. Choose a question that matches your symptoms.

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Code P0128, Possibly Related To Over Filling Freon, Or...

2014 GMC SIERRA

The A/c Was Blowing Hot. Condenser Pulley Engaged. Added 32oz Can Of Freon To Low Side. The Needle On Gauge Was Dropping As I Was Adding It...

1 ANSWER

Asked by Norinradd88

2007 GMC SIERRA

My 07 Gmc Pickup Has A Po128 Code Comeup. What Is The Problem?

2 ANSWERS

Asked by Bill Bennett

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