K Yukon/Denali 4WD V8-6.5L DSL Turbo VIN S (1999)
Fluid - Differential: Fluid Type Specifications
Front Differential
Differential Fluid Type
The content of this article reflects the changes identified in TSB number 05-00-90-010 dated December 07, 2005.
1999-2004 7.25 Inch (Blazer, Jimmy, S-10, Sonoma, Astro, Safari)
Grade ............................................................................................................................................................................................................................. GL-5
Viscosity ................................................................................................................................................................................................................... 80W-90
2002-2005 7.25 Inch (Trailblazer, Envoy, Bravada, Rainier
Grade ....................................................................................................................................................................................................................... Synthetic
Viscosity ................................................................................................................................................................................................................... 75W-90
8.25 Inch With Selectable 4WD
Grade ............................................................................................................................................................................................................................. GL-5
Viscosity ................................................................................................................................................................................................................... 80W-90
8.25 Inch With AWD
Grade ....................................................................................................................................................................................................................... Synthetic
Viscosity ................................................................................................................................................................................................................... 75W-90
1999-2001 9.25 Inch
Grade ............................................................................................................................................................................................................................. GL-5
Viscosity ................................................................................................................................................................................................................... 80W-90
2002-2005 9.25 Inch
Grade ....................................................................................................................................................................................................................... Synthetic
Viscosity ................................................................................................................................................................................................................... 75W-90
Front Drive Axle
Differential Fluid Type
The content of this article reflects the changes identified in TSB number 05-00-90-010 dated December 07, 2005.
1999-2004 7.25 Inch (Blazer, Jimmy, S-10, Sonoma, Astro, Safari)
Grade ............................................................................................................................................................................................................................. GL-5
Viscosity ................................................................................................................................................................................................................... 80W-90
2002-2005 7.25 Inch (Trailblazer, Envoy, Bravada, Rainier
Grade ....................................................................................................................................................................................................................... Synthetic
Viscosity ................................................................................................................................................................................................................... 75W-90
8.25 Inch With Selectable 4WD
Grade ............................................................................................................................................................................................................................. GL-5
Viscosity ................................................................................................................................................................................................................... 80W-90
8.25 Inch With AWD
Grade ....................................................................................................................................................................................................................... Synthetic
Viscosity ................................................................................................................................................................................................................... 75W-90
1999-2001 9.25 Inch
Grade ............................................................................................................................................................................................................................. GL-5
Viscosity ................................................................................................................................................................................................................... 80W-90
2002-2005 9.25 Inch
Grade ....................................................................................................................................................................................................................... Synthetic
Viscosity ................................................................................................................................................................................................................... 75W-90
Rear Differential
Standard Differential
Grade .............................................................................................................................................................................................................................. GL5
Viscosity ................................................................................................................................................................................................................... 80W-90
Locking Differential
Grade .............................................................................................................................................................................................................................. GL5
Viscosity .................................................................................................................................................................... 80W-90. Do not use friction modifier.
Locking Differential (Diesel)
Grade .................................................................................................................................... Use only GM part no. 1052271. Do not add friction modifier.
C3 (HD3500) Dana Axle
