Workshop Repair and Service Manuals GMC SIERRA
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Internal Combustion Powertrain Control

Ambient Light Sunload Sensor (CJ2) Driveline Control 4WD Driveline Control      Ambient Light/Sunload Sensor (CJ2) A B C D Connector Part InformationHarness Type: Instrument PanelOEM Connector: 12064760Service Connector: 12085208Description: 4-Way F Metri-Pack 150 Series (BK) Terminal Part...
Fuel System Messages Driveline Control 4WD Driveline Control      CHANGE FUEL FILTER This message will appear on the DIC for 10-seconds when a fuel filter change is required.SeeFuel Filter Replacement. WATER IN FUEL SERVICE REQUIRED This message will come on to warn you if there is water in...
X416 Rear Bumper Harness to Right Hip Lamp Harness (RO5) Driveline Control 4WD Driveline Control      X416 Rear Bumper Harness to Right Hip Lamp Harness(RO5) B A B A Connector Part InformationHarness: Rear BumperOEM: 12052641Service: 12102747Description: 2-Way F Metri-Pack 150 Series (BK) Connector Part...
Fuel Rail Pressure (FRP) Sensor (LNF) Driveline Control 4WD Driveline Control      Fuel Rail Pressure (FRP) Sensor (LNF) 1 3 Connector Part InformationHarness: InjectorOEM: 1928403966Service: 88988583Description: 3-Way F 2.8 Series Sealed (BK) Terminal Part InformationTerminal/Tray: Service by Harness...
Engine Control Module (ECM) X2 (HP2) Driveline Control 4WD Driveline Control      Engine Control Module (ECM) X2 (HP2) 1 16 32 73 52 72 17 33 53 Connector Part InformationHarness: EngineOEM: 15499466Service: 88988931Description: 73-Way F MX123 Series, Sealed (BK) Terminal Part InformationPins: 1, 3,...
Ignition Transmission Lock Check Driveline Control 4WD Driveline Control      While parked and with the parking brake set, try to turn the ignition to LOCK/OFFin each shift lever position. The ignition should turn to LOCK/OFF only when the shift lever is in P-(Park).The ignition key should come out only...
Diesel Exhaust Fluid (DEF) Warning Strategy (DEF Level) Engine Control - part 3      Exhaust Fluid EmptyRefill Now remains in the DIC until acknowledged by the driver; however, the speedlimited and mileage countdown for speed limitation remain displayed in the DIC. The DEF Indicator in the instrument panel...
Diesel Exhaust Fluid (DEF) Warning Strategy (DEF Level) Engine Control - part 2      The ExhaustFluid Empty Refill Now message remains on the DIC until acknowledged by the driver.The Max Speed mileage countdown until speed limitation will remain displayed in theDIC. The DEF Indicator in the instrument panel is...
Diesel Exhaust Fluid (DEF) Warning Strategy (DEF Level) Engine Control      An adequate on-board supply of Diesel Exhaust Fluid-(DEF) is critical for the reductionof exhaust Oxides of Nitrogen (NOx) levels within the Selective Catalyst Reduction-(SCR)stage. This vehicle provides the driver with an...
Retaining Ring Reuse Caution Driveline Control 4WD Driveline Control      Caution:Do not reuse the retaining ring. Install a NEW retainingring. Reusing the old retaining ring may cause damage to the clutchassembly.
Throttle Body Cleaning Engine Control Air Metering Acceleration Throttle      Remove the air cleaner outlet duct. Refer toAir Cleaner Resonator Outlet Duct Replacement. Warning:Turn OFF the ignition before inserting fingers into thethrottle bore. Unexpected movement of the throttle blade couldcause...