P0507 on GMC: Symptoms, Causes & DIY Fix
Official technical diagnostic wire for fault code P0507 (Idle Control System RPM Higher Than Expected - Diagnosis) specifically affecting GMC vehicles (Sierra 1500, Yukon, Acadia, Canyon).
1. Symptoms of P0507 on GMC
When the Engine Control Module (ECM/PCM) on your GMC logs fault code P0507, drivers commonly observe:
2. Most Likely Causes on GMC
Historical warranty claims and technical repair bulletins for GMC point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for GMC
Spray brake cleaner around intake manifold gaskets; an RPM change reveals the leak location. on GMC vehicles (Sierra 1500, Yukon).
Gently clean carbon soot around throttle blade using throttle cleaner and microfiber towel. on GMC vehicles (Sierra 1500, Yukon).
Follow vehicle-specific ignition key on/off timing sequence or use OBD scanner to reset baseline idle. on GMC vehicles (Sierra 1500, Yukon).
4. GMC P0507 FAQs
What causes code P0507 to trigger on a GMC?
On GMC vehicles, P0507 is most frequently caused by Intake manifold vacuum leak or Carbon buildup causing sticky electronic throttle body. Factory sensor degradation or wiring harness wear near the engine bay are common factors.
Can I safely drive my GMC with code P0507?
Driveable, but braking distance may increase slightly due to high engine idle. Given that P0507 carries a Medium severity rating on GMC vehicles, we advise performing diagnostic scanning via the OBD-II port before extended driving.
How much does it cost to fix P0507 on a GMC?
DIY replacement parts typically range between $40 - $250 (DIY Throttle Relearn: $0). If serviced at an authorized GMC dealership, expect an additional $120–$250 in professional labor based on their $125/hr hourly rate.