Silverado 3500 4WD V8-8.1L VIN G (2006)
Fluid - Transfer Case: Fluid Type Specifications
MANUAL TRANSFER CASE
DEXRON®-III Automatic Transmission Fluid. Look for "Approved for the H-Specification" on the label.
AUTOMATIC TRANSFER CASE
AUTO-TRAK II Fluid (GM Part No. U.S. 12378508, in Canada 10953626).
