Chevrolet Silverado / GMC Sierra. Service manual — part 1263

1. Ensure the reservoir is filled to the fill line with new hydraulic clutch fluid. Add fluid if

required. Use hydraulic clutch fluid GM P/N 12345347 (Canadian P/N 10953517).

2. Press the clutch pedal in completely to the floor panel.

3. Open the bleeder screw in order to purge the air from the system.

4. Close the bleeder and release the clutch pedal.

5. Repeat steps 2, 3, and 4 until all the air is out of the clutch system.

1. Check and refill the reservoir as needed while bleeding.

2. After bleeding, pump the clutch pedal several times. If clutch engagement is not

satisfactory, repeat the bleed procedure.

6. If the previous procedures are unsuccessful, perform the following steps.

1. Pump the clutch pedal very fast with full strokes for 30 seconds.

2. Stop pumping and let the air escape into the reservoir while moving the rubber pad up

and down 12 mm (0.5 in) for 30 seconds.

3. Repeat this procedure, as necessary.

CLUTCH PEDAL ENGINE START SWITCH REPLACEMENT

Removal Procedure

NOTE:

DO NOT use fluid which has been bled from a hydraulic clutch
system, in order to fill the clutch master cylinder reservoir, due to
the possibility that the fluid may be aerated, have too much
moisture content, or be contaminated and may cause system or
vehicle damage.

IMPORTANT: Ensure no air is drawn into the clutch system.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Clutch - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 15: Clutch Pedal Position Switch Electrical Connector
Courtesy of GENERAL MOTORS CORP.

1. Disconnect the clutch pedal position switch electrical connector (1).

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Clutch - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 16: Clutch Pedal Engine Start Switch
Courtesy of GENERAL MOTORS CORP.

2. Remove the plastic retainer (1) tabs from the clutch pedal position switch (2).

3. Remove the clutch pedal position switch (2) from the pushrod.

Installation Procedure

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Clutch - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 17: Clutch Pedal Engine Start Switch
Courtesy of GENERAL MOTORS CORP.

1. Install the clutch pedal position switch (2) to the pushrod.

2. Install the plastic retainer (1) tabs to the clutch pedal position switch (2).

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Clutch - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado