LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2021 >> Sierra 2500 HD AT4, 6.6L Eng VIN 7 >> Labor Times >> Transmission >> Automatic Trans >> Transmission Assembly >> Remove & Replace
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Transmission Assembly: Remove & Replace

Includes: Flush Cooling Lines. Includes: Adjust and road test.

Applies ToNoteStandard HoursWarranty HoursSkill Level
Gas,4WDIncludes: Transmission Programming and Calibration of Learned Parameters. Includes: R&I Front Propeller Shaft. Includes: R&I Rear Propeller Shaft. Includes: R&I Transmission Support. Includes: R&I Transmission Mount. Includes: R&I Transfer Case Assembly. Includes: R&I Fender Liners. Includes: R&I Starter Assembly. Includes: R&I Catalytic Converter. Includes: Check and adjust Transmission Fluid level with fluid temperature within parameters.11.95.8C
Additional Procedure: TRANSMISSION ASSEMBLY: Remove & Replace:
Where Skid Plate interferes add0.2C
Combination Procedure: CRANKSHAFT MAIN OIL SEAL: Remove & Replace:
Rear0.5B
Combination Procedure: FLYWHEEL: Remove & Replace:
0.3C
Combination Procedure: TRANSFER CASE ASSEMBLY: Overhaul:
4WD4.3A
Combination Procedure: TRANSFER CASE ASSEMBLY: Replace:
4WDIncludes: Perform Relearn procedure.0.5C