Workshop Repair and Service Manuals GMC SIERRA
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Transmission Transaxle

03-07-29-004H Manual Transmission Operating Characteristics - (May 30 2012) Manual - part 3      The clutch brake is intendedto only be used while at a stop. Care must be taken to not activate the clutch brakewhile shifting between gears. This could lead to excessive grinding or a blocked ormissed shift. Skip Shift...
03-07-29-004H Manual Transmission Operating Characteristics - (May 30 2012) Manual - part 2      This isa light rattle, and once again, vehicles with dual mass flywheels will have reducednoise. If the engine is shut off while idling in neutral with the clutch engaged,the sudden stop of the engine will create a rapid change...
03-07-29-004H Manual Transmission Operating Characteristics - (May 30 2012) Manual      Subject: Manual Transmission Operating Characteristics Models:  2013 and Prior GM Passenger Cars and Light Duty Trucks 2009 and Prior Chevrolet and GMC Medium Duty Trucks Equipped with Manual Transmission...
08-06-04-006L Information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs Calibration Verification Numbers (CVNs) and Transmission Data Screen - (Jan 25 2013) Automatic Transmission Unit - part 6      Transmission Calc. Engine Torque Parameter) Take a clear digital picture in the .jpg file format of the Tech 2® screen showingthe Transmission Data and the Max. Transmission Calc. Engine Torque parameter.Retain the Tech 2®...
08-06-04-006L Information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs Calibration Verification Numbers (CVNs) and Transmission Data Screen - (Jan 25 2013) Automatic Transmission Unit - part 5      1cchk23a1ar 12628694 5f763e5 12628694 12521434 12615744 12617097 673b472e Take a clear digital picture of the Tech 2® Programming History screen showing thecomplete VIN, Calibration IDs and the CVNs. Retain the printout...
08-06-04-006L Information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs Calibration Verification Numbers (CVNs) and Transmission Data Screen - (Jan 25 2013) Automatic Transmission Unit - part 4      Be prepared to provide all of the usual documentationthat is normally required when requesting an assembly authorization from the PQC.2007-2013 RPO LGH, LML or LMM Instructions for Confirming Calibration VerificationNumbers...
08-06-04-006L Information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs Calibration Verification Numbers (CVNs) and Transmission Data Screen - (Jan 25 2013) Automatic Transmission Unit - part 3      Go to TIS2WEB.Select: Calibration Information (SPS Info).Enter the VIN.Select: Get Cal ID.Select: ECM Engine Control Module.Select: Next.Select: Complete History.Print.Take the printout to the vehicle along with the Tech...
08-06-04-006L Information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs Calibration Verification Numbers (CVNs) and Transmission Data Screen - (Jan 25 2013) Automatic Transmission Unit - part 2      GM recommends performing this check whenever a hard part failure isseen on internal engine, transmission, transfer case or rear axle components, andbefore disassembly, repair or replacement of an engine, transmission, transfer...
08-06-04-006L Information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs Calibration Verification Numbers (CVNs) and Transmission Data Screen - (Jan 25 2013) Automatic Transmission Unit      Subject: Information for Identifying Non-GM ECM Calibration Use and Power-Up Hardware Detectionin Duramax™ Diesel Engines — Photograph Tech 2® Calibration IDs, Calibration VerificationNumbers (CVNs) and Transmission Data...
09-07-30-018D Warranty Administration - Change in Automatic Transmission Add Condition Documentation and Claim Submission - (May 10 2013) Automatic - part 2      Note:For reconditioning work beyond base repair, OLH must be documented by clock time whenreconditioning begins and is completed. OLH should not be used for work included inthe base repair time. Note:For steering wheel angle...
09-07-30-018D Warranty Administration - Change in Automatic Transmission Add Condition Documentation and Claim Submission - (May 10 2013) Automatic      Subject: Warranty Administration – Change in Automatic Transmission Add Condition Documentationand Claim Submission Models:  2014 and Prior GM Passenger Cars and Trucks Attention:  This bulletin applies to all...
10-07-30-001D Fluid Oil Leak During Cold Weather from Transmission Vent - (Feb 22 2013) Automatic Transmission Unit      Subject: Fluid/Oil Leak During Cold Weather from Transmission Vent Models:  2001-2013 Chevrolet Silverado 2500HD-3500HD Series 2001-2013 GMC Sierra 2500HD-3500HD Series Equipped with Allison® LCT 1000...
1-2-3-4-5-6 Clutch Piston Housing Assemble Automatic - part 3      corresponding to the highestnumber recorded in the previous step.Remove J 44525 selector from the turbine shaft. Align the selected 1–2–3–4 clutch backing plate-(3) so that the beveled edge of thebacking plate is facing...
1-2-3-4-5-6 Clutch Piston Housing Assemble Automatic - part 2      Position the 1–2–3–4, 4–5–6 clutch housing-(6) on the base of J 24204-2 assembly-(7) so that the rear of the housing is facing up.Install J 47339-1 compressor-(4) onto the shaft of J 24204-2 assembly-(7).Center J 47339-1...
1-2-3-4-5-6 Clutch Piston Housing Assemble Automatic      Special ToolsJ 24204-2 Bar and Stud AssemblyJ 36850 Transjel® LubricantJ 44525 Clutch Backing Plate SelectorJ 47339-1 Piston Return Spring CompressorJ 47339-2 Seal Area Protector For equivalent regional tools, refer toSpecial...
1-2-3-4-5-6 Clutch Piston Housing Assembly Installation Automatic      Special ToolsJ-36850 Transjel® LubricantJ-44587 Main Shaft Holder For equivalent regional tools, refer toSpecial Tools. Position the transmission case so that the front of the case is facing up.Remove 2 bolts-(2) from...
1-2-3-4-5-6 Clutch Piston Housing Assembly Removal Automatic      Lift and remove the 1–2–3–4,4–5–6 clutch pistonassembly-(1). Important:The thrust bearing assembly may stick to the1–2–3–4, 4–5–6clutch piston assembly or the input carrier assembly. Remove thrust bearing assembly-(1)...
1-2-3-4-5-6 Clutch Piston Housing Disassemble Automatic - part 2      Remove the seal rings-(1 and 2) from the1–2–3–4 clutchpiston-(3). Position the 1–2–3–4,4–5–6 clutch housing-(8) on the baseofJ 24204-2assembly-(10) so that the rear of the housing is facingup.AlignJ 47339-2protectorJ...
1-2-3-4-5-6 Clutch Piston Housing Disassemble Automatic      Special ToolsJ 24204-2Bar and Stud AssemblyJ 43772Torque Converter Seal InstallerJ 47339-1Piston Return Spring CompressorJ 47339-2Seal Area Protector For equivalent regional tools, refer toSpecial Tools. Position the...
1-2-3-4-5-6 Clutch Piston Housing Inspection Automatic      Important:The power take-off (PTO) gears are permanently staked to the1–2–3–4, 4–5–6clutch housing and are not serviceable. Turbine tone wheels areserviceable. Inspect the turbine tone wheel or PTO gear-(3) fordamage. Make...
1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Installation (6L80 6L90) Manual Clutch      1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Installation Callout Component Name 1 2–6 and 3–5 Reverse Clutch Hub Thrust Bearing Assembly 2 2–6 and 3–5 Reverse Clutch (with Output...
1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Removal (6L50 80 90) Manual Clutch      1-2-3-4 and 3-5 Reverse Clutch Assembly and 4-5-6 Clutch Assembly Removal Callout Component Name 1 1–2–3–4 and 3–5Reverse Clutch Assembly and4–5–6-(With Turbine Shaft) ClutchAssembly 2 Turbine Shaft Thrust...
1-2-3-4 and 4-5-6 Clutch Housing Reluctor Wheel Replacement Automatic      Special ToolsJ 43767Tone Wheel StakerJ 43768Tone Wheel Driver For equivalent regional tools, refer toSpecial Tools. Removal Procedure Grind the stakes from the1–2–3–4, 4–5–6clutch housing-(1). Position the 1–2–3–4,4–5–6...
1-2 Accumulator Cover Fluid Passages Automatic      1-2 Accumulator Cover Fluid Passages (20) Accumulator (21) Orificed Accumulator (25) 2nd Clutch (25) 2nd Clutch