Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: If the gasket or the seal becomes damaged, replace it. DO NOT use any type of silicone sealer or liquid gasket maker in place of the seal or gasket.

Install a NEW transfer case adapter seal.
Install the transfer case adapter.
NOTE: Refer to FASTENER NOTICE .
Install the transfer case adapter bolts.
Tighten

Tighten the bolts to 50 N.m (37 lb ft).

Fig 1: Transfer Case Adapter, Bolts & Seal
Courtesy of GENERAL MOTORS CORP.
Install the transmission mount.

Fig 2: Transmission Mount
Courtesy of GENERAL MOTORS CORP.
Install the transmission mount bolts.
Tighten

Tighten the bolts to 47 N.m (35 lb ft).

Fig 3: Transmission Mount Bolts
Courtesy of GENERAL MOTORS CORP.
Install the crossmember.
Install the crossmember bolts.
Tighten

Tighten the bolts to 70 N.m (52 lb ft).

Fig 4: Crossmember & Bolts
Courtesy of GENERAL MOTORS CORP.
Install the transmission mount nuts.
Tighten

Tighten the nuts to 40 N.m (30 lb ft).
Remove the transmission jack.

Fig 5: Transmission Mount Nut
Courtesy of GENERAL MOTORS CORP.
Install a NEW transfer case gasket, if necessary.
Install the transfer case. Refer to Transfer Case Assembly Replacement .
Check the fluid level. Add fluid if necessary.

Fig 6: Transfer Case Gasket
Courtesy of GENERAL MOTORS CORP.