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Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Bulletins 🢒 SES MIL DTCs P0341 P0452 P0532 P0641 And/or A/C Compressor Inoperative - keywords ac gauge hvac inoperative intermittent oil pressure stall volt

SES MIL DTCs P0341 P0452 P0532 P0641 And/or A/C Compressor Inoperative - keywords ac gauge hvac inoperative intermittent oil pressure stall volt

Subject:SES MIL DTC's P0341 P0452 P0532 P0641 and/or A/C Compressor Inoperative

Models:2007 Chevrolet Silverado
2007 GMC Sierra


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Some owners may comment that the A/C compressor goes inoperative, SES MIL, and/or the engine does not continue to run. The ECM may have set one or more of the following dtc's: P0341 P0452 P0532 P0641.

Recommendation/Instructions:

Reports have been received of the A/C pressure sensor 5 volt reference circuit 2700 shorting to ground at the A/C hose as shown below. To correct this concern repair the wiring and secure the harness to provide the concern from reoccurring.


Object Number: 1991753 Size: SH
  1. A/C Pressure Sensor
  2. Chaffing Area

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.