Chevrolet Silverado / GMC Sierra. Service manual — part 2598

1. Install the control lever.

2. If alignment of the control lever is necessary, or if the shift lever assembly was replaced

perform the following:

1. The nut must be seated at the bottom of the thread runout on the shift lever.

2. Seat the control lever against the shift lever assembly adjustment nut.

3. Back the control lever off the nut in order to align the index mark on the control lever

perpendicular to the edge of the control lever boot retainer.

4. Ensure that the index mark is located on the passenger side and that the shift pattern is

aligned parallel to the vehicle centerline or rotated no more than 6 degrees clockwise.

5. Hold the control lever and tighten the shift lever assembly nut against the control lever.

Tighten: Tighten the nut to 37 N.m (27 lb in).

6. Install the control lever boot to the control lever.

TRANSMISSION CONTROL REPLACEMENT

Removal Procedure

NOTE:

Refer to Fastener Notice .

IMPORTANT:

Ensure that the control lever is positioned into the
mechanical third or fourth gear prior to removal of the shift
lever from the transmission. The transmission must remain
in this state when the shift lever is removed.

Do not disassemble the transmission shift lever. Internal
parts for this shift lever are not available. Opening the shift
lever voids the warranty.

When removing the shift lever from the transmission, use the
exposed bolts on the base of the lever.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (TZ0)

Fig. 13: View Of Control Lever And Boot
Courtesy of GENERAL MOTORS CORP.

1. Remove the control lever and boot. Refer to Transmission Control Lever Boot

Replacement .

2. Remove the boot.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (TZ0)

3. Remove the shift lever bolts.

4. Remove the shift lever and seal.

5. Remove the shift lever insulator.

Installation Procedure

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (TZ0)

Fig. 14: View Of Control Lever And Boot
Courtesy of GENERAL MOTORS CORP.

1. Install a NEW shift lever insulator.

2. Install the shift lever seal and lever.

3. Install the shift lever bolts.

Tighten: Tighten the bolts to 20 N.m (15 lb ft).

4. Install the boot.

5. Install the control lever and boot. Refer to Transmission Control Lever Boot

Replacement .

MAINSHAFT REAR OIL SEAL REPLACEMENT

Tools Required

J 23129 Universal Seal Remover

J 6125-1B Slide Hammer

J 36503 Extension Housing Seal Installer

Removal Procedure

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Manual Transmission - Tremec 5-Speed (TZ0)