Workshop Repair and Service Manuals GMC SIERRA
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Compressed Natural Gas Tank Filler Valve Receptacle Replacement Fuel System Fuel Safety      Removal Procedure Warning:Natural gas is highly flammable. In order to reduce the riskof fire and personal injury, keep sparks, flames, and smokingmaterials away from the vehicle while you perform the CompressedNatural Gas...
Connecting Rod Bearings Selection Specifications Engine Block Cylinder Block Piston Assembly      Connecting Rod Bearing Grade (1) First Design (2) Second Design Connecting Rod Bearing Grade Connecting Rod Grade (Stamped on Connecting Rod) Use This Bearing Color Bearing Thickness Oil Clearance Metric...
Coolant Heater Cord Replacement (LGH LML) Engine Cooling      Coolant Heater Cord Replacement Callout Component Name Preliminary Procedure Remove the right front wheelhouse liner. Refer toFront Wheelhouse Liner Replacement - Right Side. 1 Coolant Heater Cord Procedure...
Coolant Heater Cord Replacement (LH6 LMG LY2 and LY5) Engine Cooling      Removal Procedure Raise and support the vehicle. Refer toLifting and Jacking the Vehicle.Remove the oil pan skid plate bolts and plate, ifequipped. Disconnect the coolant heater cord electricalconnector. Remove the...
Coolant Heater Cord Replacement (LY6) Engine Cooling      Removal Procedure Raise and support the vehicle. Refer toLifting and Jacking the Vehicle.Remove the front 2 oil pan skid plate bolts, loosen the 2rear bolts and remove the skid plate, if equipped. Disconnect the coolant...
Coolant Heater Replacement (Diesel) Engine Cooling      Coolant Heater Replacement Callout Component Name Preliminary ProcedureDrain the cooling system. Refer toCooling System Draining and FillingRemove the oil level indicator tube. Refer toOil Level Indicator Tube...
Coolant Heater Replacement (V6) Engine Cooling      Removal Procedure Drain the cooling system. Refer toCooling System Draining and Filling.Disconnect the heater cord from the coolantheater-(4).Loosen the coolant heater bolt.Remove the coolant heater from the engine block.Do...
Coolant Heater Replacement (V8) Engine Cooling      Removal Procedure Drain the cooling system/engine block. Refer toCooling System Draining and Filling.Raise and support the vehicle. Refer toLifting and Jacking the Vehicle.For 1500 series vehicles, remove the oil pan skid...
Cooling Fan and Shroud Replacement (Non-HP2) Engine Cooling Radiator Fan      Removal ProcedureDrain the cooling system. Refer toCooling System Draining and FillingRemove air inlet duct.Disconnect upper radiator hose from radiator. Disengage the radiator inlet hose clip (2) at the fanshroud. If...
Cooling System Draining and Filling (Static Fill LGH LML) Engine Cooling      Special Tools J-26568 Coolant and Battery Tester For equivalent regional tools, refer toSpecial Tools. Draining Procedure Warning:To avoid being burned, do not remove the radiator cap orsurge tank cap while the engine is...
Cooling System Draining and Filling (Static Fill) Engine Cooling      Special ToolsJ 26568 Coolant and Battery TesterJ 38185 Hose Clamp PliersDraining Procedure Warning:To avoid being burned, do not remove the radiator cap orsurge tank cap while the engine is hot. The cooling system willrelease...
Cooling System Draining and Filling (Vac-N-Fill Diesel) Engine Cooling - part 2      This will eliminate air from the fill hose.Close the valve on the venture assembly.If there is a suspected leak in the cooling system, allow the system to stabilizeunder vacuum and monitor for vacuum loss. If vacuum loss is...
Cooling System Draining and Filling (Vac-N-Fill Diesel) Engine Cooling      Special ToolsGE-47716 Vac-N-Fill Coolant Refill ToolJ-26568 Coolant and Battery TesterJ-42401 Radiator Cap and Surge Tank Test Adapter For equivalent regional tools, refer toSpecial Tools. Draining Procedure Warning:With a...
Crankcase Depression Regulator Valve Replacement      Crankcase Depression Regulator Valve Replacement Callout Component Name 1 Crankcase Depression Regulator Valve Fastener (Qty:-2) Caution:Refer toFastener Caution. Tighten 10-Y (89-lb-in) 2 Crankcase...
Crankcase Ventilation System Description Emissions PCV      An oil/air separator-(1) is located on the leftvalve cover. Oil entrained gases from the crankcase enter theseparator through a passage in the left valve cover. The gases flowthrough fixed and variable nozzles inside the...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft - part 4      Remove the bearing cap bolts, cap, and paper stock.Replace bearing halves as required to obtain the properbearing clearances.Install the bearings, cap, and bolts.Tighten the crankshaft bearing cap bolts:Tighten the crankshaft...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft - part 3      Remove the oil pump assembly.Rotate the crankshaft until the crankshaft journal/connectingrod to be measured is in the 10-o'clock position. Note:The crankshaft must be secure with no movement or rotation inorder to obtain an...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft - part 2      The crankshaft bearings are of the precision insert type anddo not use shims for adjustment. If the clearances are excessive,then new upper and lower crankshaft bearings will be required. Theservice crankshaft bearings are...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft      Special ToolsJ 7872Magnetic Base Dial IndicatorJ 43690Rod Bearing Clearance Checking ToolJ 45059Angle Meter For equivalent regional tools, refer toSpecial Tools Warning:Refer toSafety Glasses Warning. Note:Use care when...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft - part 2      J 45059Angle Meter For equivalent regional tools, refer toSpecial Tools. Clean the cylinder block bearing fitting surfaces.Clean the crankshaft and upper bearings (1) and lowerbearings (2).Install the bearings into the...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft      Special ToolsJ 7872Dial Indicator SetJ 45059Angle Meter For equivalent regional tools, refer toSpecial Tools. Clean the crankshaft and bearings.Inspect the crankshaft for the following conditions.Excessive wear or damage...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft - part 2      Excessivebearing clearance may affect crankshaft position sensor signals andmay affect OBD-II system operation.Remove the bearing cap side bolts prior to capremoval.Remove the bearing caps, bearing half, and bolts. Refer...
Crankshaft and Bearing Cleaning and Inspection Engine Block Cylinder Block Crankshaft      Special ToolsJ 7872Magnetic Base Dial Indicator SetJ 43690Rod Bearing Checking ToolJ 43690-100Rod Bearing Checking Tool – AdapterKit For equivalent regional tools, refer toSpecial Tools. Cleaning Procedure Note:Use care...
Crankshaft and Bearing Installation Engine Block Cylinder Block Crankshaft      Special Tools J 45059Angle Meter For equivalent regional tools, refer toSpecial Tools. Note: Crankshaft bearing clearances are critical. Excessivecrankshaft bearing clearance may affect crankshaftposition-(CKP) sensor...