A/C Clutch Status Circuit Low Voltage
Table of contents
P1546 GMC Possible Causes
- Faulty A/C Clutch Relay
- A/C Clutch Relay harness is open or shorted
- A/C Clutch Relay circuit poor electrical connection
How do I fix code P1546 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1546 GMC code
The cost of diagnosing the P1546 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1546 GMC Description
The Powertrain Control Module (PCM) will activate the A/C clutch relay when the PCM detects that A/C has been requested. When the PCM activates the relay, the voltage should be present at both the A/C compressor clutch and the A/C clutch status circuit at the PCM.