System Specifications

ELECTRONIC TRANSFER CASE (NV233 RPO NP1)
DEXRON-III Automatic Transmission Fluid. Look for "Approved for the H-Specification" on the label.

AUTOMATIC TRANSFER CASE (NV236 RPO NP8)
AUTO-TRAK II Fluid (GM Part No. U.S. 12378508, in Canada 10953626).