P1240 GMC Possible Causes
- Faulty fuel injector 7
- Fuel injector 7 harness is open or shorted
- Poor electrical connection in fuel injector 7 circuit
How is GMC P1240 Code Repair Done?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1240 GMC Meaning
Injector Circuit Cylinder 7 Intermittent is the generic description for GMC P1240 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the GMC P1240 OBDII code.