Tools Required

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.

J 39630-1 Lower Control/Valve Body Gasket Guide Pins. See Special Tools .
J 39630-2 Lower Control/Valve Body Gasket Guide Pins. See Special Tools .
DT-47707-R1 Internal Mode Switch Alignment Tool. See Special Tools .

Fig 1: Identifying Lower Control Valve Body Over J 39630-2

Courtesy of GENERAL MOTORS CORP.

Install the lower control valve body (903) over the J 39630-2 . See Special Tools .

NOTE: Refer to Fastener Notice .

Position the solenoid valve fluid filter retainer (981) onto the lower control valve body (903) and install some of the valve body bolts (938, 940, 941) and hand tighten them.
Remove the J 39630-2 . See Special Tools .
Tighten: Tighten the bolts (938, 940, 941) in a star pattern to 8-14 N.m (6-10 lb ft).

Fig 2: DT-47707-R1

Courtesy of GENERAL MOTORS CORP.

Position the DT-47707-R1 onto the lower control valve body, next to the 2-3 shift solenoid valve, and install the two J 39630-1 . See Special Tools .

IMPORTANT: Hold the IMS (942) against the DT-47707-R1 while tightening the bolts. See Special Tools .

Locate the internal mode switch (IMS) (942) against the DT-47707-R1 and install the three 8 mm bolts (939). See Special Tools .
Tighten: Tighten the bolts (939) to 8-14 N.m (6-10 lb ft).
Remove the DT-47707-R1 and the J 39630-1 . See Special Tools .

Fig 3: Lower Control Valve Body

Courtesy of GENERAL MOTORS CORP.

Install the remaining bolts (941) into the lower control valve body (903).
Tighten: Tighten the bolts (941) to 8-14 N.m (6-19 lb ft).

Fig 4: Lower Control Valve Body Wire Harness

Courtesy of GENERAL MOTORS CORP.

Connect the lower control valve body wire harness (943) to the following parts:
- 1-2 shift solenoid valve (909)
- 2-3 shift solenoid valve (910)
- Internal mode switch (IMS) (942)