Chevrolet Silverado / GMC Sierra. Service manual — part 1051

Courtesy of GENERAL MOTORS CORP.

1. Install the following parts:

The TCC valve spring

The TCC valve

The valve bore plug

Fig. 99: View Of Valve Bore Plug Retainer Ring & Reverse Boost Valve Bushing

IMPORTANT:

Clean and inspect the TCC solenoid O-ring for cuts,
nicks, and damage. Replace if necessary.

Inspect the TCC bore for sediment and debris. Flush the
bore if necessary.

Clean and inspect the TCC valve for binding, scoring,
and damage.

Inspect the TCC spring for cracks and deformed or
broken coils.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Retainer Ring
Courtesy of GENERAL MOTORS CORP.

2. Install the TCC valve retainer ring (1).

3. Install the TCC control solenoid.

4. Install the TCC control solenoid retaining bolts.

Tighten: Tighten the bolts to 8-14 N.m (71-124 lb in).

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Fig. 100: View Of TCC Solenoid & Wiring Harness
Courtesy of GENERAL MOTORS CORP.

5. Connect the TCC control solenoid connector.

6. Install the TCC PWM solenoid.

7. Install the TCC PWM solenoid retainer.

Fig. 101: View Of TCC PWM Solenoid & Retainer
Courtesy of GENERAL MOTORS CORP.

8. Connect the TCC PWM Solenoid electrical connector.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

9. Install the transmission filter. Refer to Automatic Transmission Fluid and Filter

Replacement.

TRANSMISSION FLUID FILLER TUBE AND SEAL REPLACEMENT

Removal Procedure

1. Remove the intake manifold. Refer to Intake Manifold Replacement (L92 - First

Design) or Intake Manifold Replacement (L92 - Second Design) or Intake Manifold
Replacement (LY2 and LY6) or Intake Manifold Replacement (LH6, LMG, LY5 and
L76) .

Fig. 102: View Of Transmission Oil Level Indicator
Courtesy of GENERAL MOTORS CORP.

2. Unlock the transmission oil level indicator.

3. Remove the transmission oil level indicator.

4. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado