NP-231 ("T" Series): Removal
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 1990 Pontiac Trans Sport, 1990 Oldsmobile Silhouette, 1990 GMC Vandura Special, 1990 GMC Vandura, and 1990 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect negative battery cable. Move transfer case shift lever to 4H position. Raise vehicle and remove skid plate. Drain transfer case. Mark front and rear output shaft yokes and drive shafts for reassembly reference and remove shafts.
- Disconnect speedometer cable and vacuum harness from transfer case. Disconnect shift linkage from case. Remove catalytic converter hanger bolts at converter and loosen front catalytic converter clamp.
- Raise transmission and transfer case assembly with jack and remove transmission mount bolts. Remove mount. Lower complete assembly. Support transfer case alone and remove transmission-to-transfer case bolts. Remove transfer case from vehicle.