Engine-Codes - Gmc - P1503 GMC

P1503 GMC - Theft Deterrent Fuel Enable Signal Not Correct

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1503 GMC Possible Causes

  • Faulty Theft Deterrent System
  • Theft Deterrent System program

How is the P1503 GMC code repair?

Start by checking 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.

What is the cost to diagnose the P1503 GMC code

Labor: 1.0

The cost to diagnose the P1503 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.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

Possible Symptoms

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

P1503 GMC Meaning

With the engine cranking, the Powertrain Control Module (PCM) received a frequency code that did not match the code it received from the theft deterrent module.

More Information

Need more information on how to fix the P1503 GMC code?
Get Access to Factory Service Manuals

Need more help?

Get the P1503 Gmc code diagnosed by a professional: Find a repair shop in your area