Transmission Case Cover and 1-2 Reverse Clutch Assembly Installation

WARNING: This page is about a different variant/trim than selected.

Fig 1: Applying Formed In Place Gasket RTV To Transmission Case Cover

Courtesy of GENERAL MOTORS CORP.

Remove any sealant and automatic transmission fluid from the contacting surfaces of the transmission case cover and the transmission case.

IMPORTANT: Do not get any fluid on the contacting surfaces of the transmission case cover or the transmission case.

Apply a 3 mm (1/8 in) bead of sealant GM P/N 89020326 (Canadian P/N 89021188), to the transmission case cover.

Fig 2: View Of Transmission Case Assembly & Transmission Case Cover Assembly

Courtesy of GENERAL MOTORS CORP.

Install the transmission case cover assembly (19) onto the transmission case assembly (17).

Fig 3: Identifying Transmission Case Cover Bolts

Courtesy of GENERAL MOTORS CORP.

Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489), to the threads of all the case cover bolts.
Install 7 - M8 x 1.25 x 30 mm bolts (20) and hand tighten.
Install 1 - M8 x 1.25 x 45 mm bolt (22) and hand tighten.
Install 2 - M8 x 1.25 x 48 mm bolts (21) and hand tighten.
Install 1 - M8 x 1.25 x 30 mm/M6 x 1.0 x 10 mm double stud (74) and hand tighten.

IMPORTANT: The length of transmission case cover bolt (77) maybe 78 mm 1st design or 30 mm 2nd design. Do not use the 78 mm bolt in a 2nd design cover.

Install 1 - M8 x 1.25 x 78 mm if 1st design or a M8 x 1.25 x 30 mm if 2nd design bolt (77) and hand tighten.

Fig 4: Identifying Transmission Case Cover Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice .

Tighten the 12 transmission case cover assembly bolts in sequence.
Tighten: Tighten the 12 transmission case cover assembly bolts to 25 N.m (18 lb ft).