Sierra 2500 4WD V8-6.6L DSL Turbo (2007)
Fluid - Transfer Case: Fluid Type Specifications
MANUAL TRANSFER CASE
Manual Transmission Fluid (GM Part No. U.S. 88861800, in Canada 88861801).
AUTOMATIC TRANSFER CASE
AUTO-TRAK II Fluid (GM Part No. U.S. 12378508, in Canada 10953626).
