How to Fix P1105 GMC Code?
Start by checking the “possible causes” listed above. Visually inspect the wiring harness and corresponding connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check Engine Light illuminated (or Service Engine Soon warning light)
P1105 GMC Meaning
Secondary Vacuum Sensor Circuit is the generic description for GMC P1105 code, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about the OBDII P1105 GMC code.