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Engine-Codes – GMC – P1792 GMC

P1792 GMC Code - ECM to TCM Engine Coolant Signal

Quick Answer

The P1792 GMC code refers to a communication error between the Engine Control Module (ECM) and the Transmission Control Module (TCM) regarding the engine coolant signal. Common causes include Faulty wiring or connectors, Malfunctioning ECM or TCM, Engine coolant sensor issues. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1792 GMC indicates ECM to TCM Engine Coolant Signal.
Common causes
Common causes include Faulty wiring or connectors, Malfunctioning ECM or TCM, Engine coolant sensor issues.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1792 GMC Description

The P1792 GMC code refers to a communication error between the Engine Control Module (ECM) and the Transmission Control Module (TCM) regarding the engine coolant signal. In simpler terms, this means that there is a problem with the exchange of information between these two essential components of the vehicle's system.

OBDII Code P1792 GMC - ECM to TCM Engine Coolant Signal
P1792 GMC Code - ECM to TCM Engine Coolant Signal

Common Causes of P1792 GMC

  1. Faulty wiring or connectors
  2. Malfunctioning ECM or TCM
  3. Engine coolant sensor issues
  4. Software glitches
  5. Corrosion in electrical connections

Symptoms of P1792 GMC

  1. Engine overheating
  2. Poor engine performance
  3. Transmission shifting issues
  4. Illuminated check engine light
  5. Reduced fuel efficiency

How to Fix P1792 GMC

  1. Perform a thorough inspection of the wiring and connectors for any damage or corrosion.
  2. Check the ECM and TCM for proper functioning and potential software updates.
  3. Test the engine coolant sensor to ensure it is sending accurate signals.
  4. Clear the diagnostic trouble codes and reset the system to see if the issue persists.
  5. If necessary, replace any faulty components identified during the diagnostic process.

Cost to Fix P1792 GMC

The cost of repairing a P1792 GMC code can vary depending on the specific cause of the issue and the extent of the repair needed. In general, you can expect to pay anywhere from $100 to $500 for parts and labor. However, as mentioned earlier, labor rates can vary significantly, so it's advisable to check with local auto repair shops for a more accurate estimate based on your location and vehicle type.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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