Workshop Repair and Service Manuals GMC SIERRA
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Driveline

09-04-19-002B 4WD System Shift Performance in Cold Ambient Temperatures (Use Synthetic Fluid in Light Duty Front Axles with 8 25 Inch Ring Gears) - (Sep 14 2012) Axles      Subject: 4WD System Shift Performance in Cold Ambient Temperatures (Use Synthetic Fluid inLight Duty Front Axles with 8.25” Ring Gears) Models:  1999-2013 Chevrolet Silverado 1500 Series Models 1999-2013 GMC...
12-04-21-001B Transfer Case Identification First Design vs Second Design - (Apr 11 2013) 4WD Transfer Case - part 5      ront Case Half Identification The first design front case half assembly can be identified as having an internalgear that is a 94-tooth design with an inside diameter (a) of 148.5-mm-(5.85-in). The second design front case...
12-04-21-001B Transfer Case Identification First Design vs Second Design - (Apr 11 2013) 4WD Transfer Case - part 4      img src="files/originals/12-04-21-001b-transfer-case-identification-first_8.png" alt="#12-04-21-001B: Transfer Case Identification First Design vs. Second Design - (Apr 11, 2013) 4WD Transfer Case " title="#12-04-21-001B:...
12-04-21-001B Transfer Case Identification First Design vs Second Design - (Apr 11 2013) 4WD Transfer Case - part 3      Service assembliesmay contain either first or second design content. Both first and second design servicecomponents are available.2007-12i Magna HD NQH – produced with first-design content. First design servicecomponents are...
12-04-21-001B Transfer Case Identification First Design vs Second Design - (Apr 11 2013) 4WD Transfer Case - part 2      Refer to Measuring/AdjustingClutch Assembly Height in Transfer Case Assemble, Transfer Case Description and OperationandTransfer Case High/Low Clutch Reset. Heavy duty-(HD) components are the only partsavailable for service....
12-04-21-001B Transfer Case Identification First Design vs Second Design - (Apr 11 2013) 4WD Transfer Case      Subject: Transfer Case Identification First Design vs. Second Design Models:  2007-2013 Cadillac Escalade Models 2007-2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2007-2013 GMC Sierra, Yukon, Yukon...
13346 Service Update for Inventory and Customer Vehicles - 4-Wheel Drive Transfer Case Adapter Housing - Expires with Base Warranty - (Nov 11 2013) 4WD Transfer Case Transfer Mounts and Adapters - part 2      ervice ProcedureRaise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI. Locate the traceability number on the transmission low reverse clutch housing (1).The traceability number was written with a...
13346 Service Update for Inventory and Customer Vehicles - 4-Wheel Drive Transfer Case Adapter Housing - Expires with Base Warranty - (Nov 11 2013) 4WD Transfer Case Transfer Mounts and Adapters      Subject: 13346 – Service Update for Inventory and Customer Vehicles - 4-Wheel Drive TransferCase Adapter Housing – Expires with Base Warranty Models:  2013 Chevrolet Silverado HD 2013 GMC Sierra HD...
99-04-20-002H Information on Driveline Clunk Noise - (Apr 11 2013)      Subject: Information on Driveline Clunk Noise Models:  2014 and Prior GM Passenger Cars and Light Duty Trucks     This bulletin is being revised to add the 2013-2014 model years. Please discard...
Backlash Adjustment (8 6 Inch Axle) Axles Rear - part 2      Add the average of each of the shim measurements together.Record the measurement. This is the thickness for the right side shim pack.Calculate the average of the 3-measurements for each shim.Assemble a new right side shim pack...
Backlash Adjustment (8 6 Inch Axle) Axles Rear      Special ToolsJ 8001 Dial Indicator SetJ 25025-1 Guide PinsJ 25588 Side Bearing Shim Installer Note: Ensure that the side bearing surfaces in the axle housing are clean and free of burrs.If the original bearings are to be...
Backlash Adjustment (9 5 LD Axle) Axles Rear      Special ToolsJ-8001Dial Indicator SetJ-24429Side Bearing Backlash SpannerJ-25025Guide Pins Note: Ensure that the side bearing surfaces in the axle housing are clean and free of burrs.If the original bearings are to be reused,...
Backlash Inspection and Adjustment Axles Front      Tools RequiredJ-8001 Dial Indicator SetJ-36599-A Side Bearing Nut WrenchJ-36615 Side Bearing Nut WrenchRemove all alignment marks made previously and re-mark the location of the differentialadjuster nut sleeves in relation to...
Camshaft Position Sensor Exciter Ring Replacement Differentials      Removal Procedure Remove the engine front cover. Refer toEngine Front Cover Replacement. Caution:Do not use an impact driver to remove or install the oil pumpdriven gear nut. Use of an impact driver may shear the oil...
Differential Bearing Replacement Differentials      Special ToolsJ-8092Universal Driver Handle –?-in – 10J-8107–4Side Bearing Remover PlugJ-8107–5Side Bearing Remover PlugJ-21784Side Bearing InstallerJ-22888–DSide Bearing Puller SetJ-22888–20-ASide Bearing...
Differential Carrier Assembly Assemble (8 25 Inch Axle) Differentials Differential Carrier - part 3      If the rotatingtorque of the pinion and differential assembly is not within specifications, continueto tighten the left and right side differential adjuster nut sleeves in small equalincrements on each side until the rotating...
Differential Carrier Assembly Assemble (8 25 Inch Axle) Differentials Differential Carrier - part 2      Recheck the rotating torque and adjust if necessary.Remove the J-8614-01 flange and pulley holding tool. Note:Ensure that the differential adjuster nut is fully seated in the adjuster nut sleeve. Position the differential...
Differential Carrier Assembly Assemble (8 25 Inch Axle) Differentials Differential Carrier      Special ToolsGE-8092 Driver Handle (Universal Driver Handle-3/4-in 10)J-8614-01 Flange and Pulley Holding ToolJ-35512 Inner Pinion Bearing InstallerJ-36366 Pinion Oil Seal InstallerJ-36599-A Side Bearing Nut WrenchJ-36603 Side...
Differential Carrier Assembly Assemble (9 25 Inch Axle) Differentials Differential Carrier - part 3      If the rotating torque measurement is below 2.8-Y (25-lb-in) for used bearings, or 3.4-Y (30-lb-in) for new bearings, adjust the differential side bearing preload using the followingsteps:Place an alignment mark between the...
Differential Carrier Assembly Assemble (9 25 Inch Axle) Differentials Differential Carrier - part 2      Remove the J-8614-01 flange and pulley holding tool.Assemble the right side differential adjuster nut into the differential nut sleeveuntil fully seated. Apply a small amount of lubricant on the right adjuster threads. Refer...
Differential Carrier Assembly Assemble (9 25 Inch Axle) Differentials Differential Carrier      Special ToolsGE-8092 Universal Driver Handle – ?-in – 10J-8614-01 Flange and Pulley Holding ToolJ-36366 Pinion Oil Seal InstallerJ-36599-A Side Bearing Nut WrenchJ-36603 Side Bearing Cup InstallerJ-36609 Axle Tube Bearing...
Differential Carrier Assembly Disassemble (8 25 Inch Axle) Differentials Differential Carrier - part 3      Install the J-45858-4 over the inner pinion bearing cup. Install the forcing screw-(1) of the J-45858 front axle bearing race remover/installer into the J-45858-4-(2).Drive out the inner pinion bearing cup by pounding on...
Differential Carrier Assembly Disassemble (8 25 Inch Axle) Differentials Differential Carrier - part 2      Using the J 34011 pilot bearing remover, remove the clutch shaft bearing-(S4WD only). Remove the vent connector. Remove the differential carrier assembly bolts-(1).Separate the left carrier case half from the right...
Differential Carrier Assembly Disassemble (8 25 Inch Axle) Differentials Differential Carrier      Special ToolsJ 22912-B Split-Plate Bearing PullerJ 2619-01 Slide HammerJ 29369-1 Bushing and Bearing RemoverJ 34011 Pilot Bearing RemoverJ 36598 Holding FixtureJ 36614 Inner Pinion Bearing InstallerJ 45765 Pinion...