Hummer H3. Manual — part 921

Perform the hydraulic clutch bleeding procedure with the aid of an assistant.

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

from a clean sealed container. Refer to Sealers and Lubricants for the correct hydraulic
fluid type.

2. Stroke the clutch pedal from the up stop to the down stop position at least 15 times.

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.

2007 Hummer H3

2007 TRANSMISSION Clutch - H3

Fig. 15: View Of Clutch Hydraulic Hose Quick Connect Fitting
Courtesy of GENERAL MOTORS CORP.

3. With the pedal in the down stop position. Open the bleeder valve (1) to release the trapped

air.

4. Close the bleeder valve (1) and slowly return the clutch pedal to the up stop position.

5. Open the bleeder valve (1) and slowly depress the clutch pedal from the up stop to the down

stop position until fluid escapes through the bleeder.

6. Close the bleeder valve (1).

7. Return the clutch pedal to the up stop position.

8. Depress the clutch pedal from the up stop to the down stop position.

2007 Hummer H3

2007 TRANSMISSION Clutch - H3

9. Open the bleeder valve (1) and allow fluid with air bubbles to escape through the bleeder

valve.

10. Close the bleeder valve (1).

11. Repeat steps 7-10 until fluid without air bubbles escapes through the bleeder valve.

CLUTCH PEDAL POSITION SWITCH REPLACEMENT

Removal Procedure

IMPORTANT: Always make sure that the clutch fluid reservoir remains

filled with new clean hydraulic fluid.

2007 Hummer H3

2007 TRANSMISSION Clutch - H3

Fig. 16: View Of Clutch Release Switch Electrical Connector
Courtesy of GENERAL MOTORS CORP.

1. Disconnect the electrical connector (2) from the clutch pedal position switch (1).

2007 Hummer H3

2007 TRANSMISSION Clutch - H3