P1543 GMC - A/C System Performance

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3  What does this mean?

P1543 GMC Possible Causes

  • Faulty A/C System
  • A/C System harness is open or shorted
  • A/C System circuit poor electrical connection

First diagnose P1543 GMC code

    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 terminals.

Cost of diagnosing the P1543 GMC code

    Labor: 1.0

    The cost of diagnosing the P1543 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

P1543 GMC Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1543 GMC Meaning

With the engine running, the Powertrain Control module (PCM) detects that the A/C refrigerant charge was below a specified value (determined by the Evaporator Temperature and Refrigerant Pressure inputs)
OBDII Code P1543 GMC - A/C System Performance - Engine-Codes.com

P1543 GMC More Information

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