Hummer H3. Manual — part 766

Fig. 128: Identifying Electrical Components In Valve Body
Courtesy of GENERAL MOTORS CORP.

16. Snap the wiring harness in place on the valve body bolts. Ensure the harness loom tab is

located under the TFP switch.

17. Connect the internal wiring harness electrical connectors to the following components:

The TFP manual valve position switch (1)

The 1-2 shift solenoid (2)

The 2-3 shift solenoid (3)

The pressure control solenoid (4)

The TCC/PWM solenoid (5)

2007 Hummer H3

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

The 3-2 shift solenoid (6)

18. Install the transmission filter and oil pan. Refer to Automatic Transmission Fluid and

Filter Replacement.

19. Reset the TAP values. Refer to Transmission Adaptive Functions.

CONTROL AND SHIFT SOLENOIDS REPLACEMENT

Removal Procedure

IMPORTANT: It is recommended that transmission adaptive pressure (TAP)

information be reset.
Resetting the TAP values using a scan tool will erase all
learned values in all cells. As a result, The ECM, PCM or TCM
will need to relearn TAP values. Transmission performance
may be affected as new TAP values are learned.

2007 Hummer H3

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

Fig. 129: Identifying Valve Body Electrical Connections
Courtesy of GENERAL MOTORS CORP.

1. Remove the transmission oil pan and filter. Refer to Automatic Transmission Fluid and

Filter Replacement.

2. Remove the 1-2 accumulator if necessary. Refer to Accumulator Assembly, Spacer Plate

and Gaskets.

IMPORTANT: Do not remove the valve body for the following procedures.

Removal of the 1-2 accumulator is necessary only if
servicing the pressure control solenoid.

2007 Hummer H3

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

3. Disconnect the internal wiring harness electrical connectors from the following components:

Transmission fluid pressure switch (1)

1-2 shift control solenoid (2)

2-3 shift control solenoid (3)

Pressure control solenoid (4)

TCC PWM solenoid (5)

3-2 control solenoid (6)

Fig. 130: Locating Pressure Control Solenoid & Retainer
Courtesy of GENERAL MOTORS CORP.

4. Remove the pressure control solenoid retainer.

5. Remove the pressure control solenoid.

2007 Hummer H3

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