Hummer H3. Manual — part 745

Fig. 53: View Of Park/Neutral Back Up Switch
Courtesy of GENERAL MOTORS CORP.

7. Remove the bolts securing the park/neutral back up switch to the transmission.

IMPORTANT: If the switch does not slide off the manual shaft, the outer

edge of the manual shift shaft may need to be filed to remove
any burrs.

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

8. Remove the park/neutral back up switch from the manual shaft.

Installation Procedure

Fig. 54: View Of Park/Neutral Back Up Switch
Courtesy of GENERAL MOTORS CORP.

1. Install the park/neutral back up switch to the transmission manual shaft by aligning the

switch hub flats with the manual shaft flats.

2. Slide the switch onto the transmission manual shaft until the switch mounting bracket

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

contacts the mounting bosses on the transmission.

3. Loosely install the 2 park/neutral back up switch bolts.

Fig. 55: Positioning The J 41364-A Onto The PNP Switch
Courtesy of GENERAL MOTORS CORP.

4. Position the J 41364-A onto the park/neutral back up switch. Ensure that the 2 slots on the

switch where the manual shaft is inserted are lined up with the lower 2 tabs on the tool.

IMPORTANT: If a new switch is being installed, the switch will come with a

positive assurance bracket. The positive assurance bracket
aligns the new switch in the proper position for installation
and the use of the J 41364-A will not be necessary.

NOTE:

Refer to Fastener Notice .

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

5. Rotate the switch until the upper locator pin on the tool is lined up with the slot on the top

of the switch.

Tighten: Tighten the park/neutral back up switch bolts 27 N.m (20 lb ft).

6. Remove the J 41364-A from the switch. If installing a new switch, remove the positive

assurance bracket at this time.

Fig. 56: View Of Park/Neutral Back Up Switch Electrical Connector
Courtesy of GENERAL MOTORS CORP.

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3