Chevrolet Silverado / GMC Sierra. Service manual — part 986

4. Remove the shift solenoid retainers (1) from shift solenoid 2 (SS2) (4) and SS3 (5).

5. Install the internal wiring harness (2) onto the main valve body (10).

6. Install the shift solenoid retainers (1) over the wiring harness tabs.

7. Connect internal wiring harness (2) to the following components:

Transmission fluid pressure (TFP) switch (9)

Transmission internal mode switch (IMS)

SS1 (8)

Torque converter clutch pressure control solenoid (TCC PCS) (3)

SS2 (4)

SS3 (5)

PCS2 (6)

PCS1 (7)

Modulated main pressure (MAIN MOD) solenoid (11)

TRANSMISSION FLUID PAN AND FILTER ASSEMBLY INSTALLATION

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 490: Identifying Pan And Filter Assembly
Courtesy of GENERAL MOTORS CORP.

1. Install the transmission internal oil filter seal (6) onto the transmission internal oil filter (5).

2. Align the neck of the transmission internal oil filter (5) with the filter hole in the

transmission case.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

3. Install the transmission internal oil filter (5).

4. Make sure the filter is seated.

5. Install a new oil pan gasket (4) onto the transmission case.

6. Install the oil pan (3) onto the transmission case.

7. Install 12 oil pan bolts (7).

Tighten: Tighten the bolts to 27 N.m (20 lb ft).

8. Install the drain plug seal (2) onto the drain plug (1).

9. Install the drain plug (1).

Tighten: Tighten the plug to 35 N.m (26 lb ft).

1-2-3-4-5-6 CLUTCH PISTON HOUSING ASSEMBLY INSTALLATION

Tools Required

J 36850 Transjel® Lubricant. See Special Tools.

J 44587 Main Shaft Holder. See Special Tools.

Installation

NOTE:

Refer to Fastener Notice .

NOTE:

Refer to Component Fastener Tightening Notice .

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 491: View Of Main Shaft Holder & Mounting Bolts
Courtesy of GENERAL MOTORS CORP.

1. Position the transmission case so that the front of the case is facing up.

2. Remove 2 bolts (2) from J 44587 (1). See Special Tools.

3. Remove J 44587 from the power take-off (PTO) access. See Special Tools.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado