2018 GMC Sierra OBDII Codes List

Cylinder 2 Injection Timing

Cylinder 3 Injection Timing

Cylinder 4 Injection Timing

Cylinder 5 Injection Timing

Cylinder 6 Injection Timing

Injector Timing Control Circuit

Transmission Fluid Overtemperature

Cylinder 7 Injection Timing

Cylinder 8 Injection Timing

Throttle Position Sensor 2 Circuit Low Voltage

Throttle Position Sensor 2 Circuit High Voltage

Fuel Pump Control Circuit Low Voltage

Fuel Pump Control Circuit High Voltage

Engine Overboost

Fuel Pump Control Circuit

Fuel Pump Control Module Enable Circuit

Cylinder 1 Injector Control Circuit Low Voltage

Cylinder 1 Injector Control Circuit High Voltage

Cylinder 2 Injector Control Circuit Low Voltage

Cylinder 2 Injector Control Circuit High Voltage