Chevrolet Silverado / GMC Sierra. Service manual — part 1103

Fig. 296: Identifying Case Fluid Passages
Courtesy of GENERAL MOTORS CORP.

2. Using compressed air, blow into all of the case fluid passages (3, 7, 8, 11, 16, 18, 26, 29,

37, 45) to ensure that all case fluid passages are clear of any obstruction.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Fig. 297: Inspecting Case Assembly Components For Damage
Courtesy of GENERAL MOTORS CORP.

3. Inspect the 2-4 servo bore, the 3rd accumulator retainer and ball assembly (40), the orifice

cup plug (11) in the servo bore, and the 2nd apply piston pin bore for any of the following
conditions:

Porosity

Burrs

Debris

Any other damage

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Fig. 298: Locating Orifice Cup Plug
Courtesy of GENERAL MOTORS CORP.

4. Inspect the 3-4 accumulator bore and the orifice cup plug (38) for any of the following

conditions:

Porosity

Burrs

Blockage

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Any other damage

5. Inspect all bolt holes for thread damage. Use heli-coil to repair damaged threads.

6. Inspect the cooler connectors for damage and proper torque.

Specification: Cooler connector torque should be 38 N.m (28 lb ft)

3RD ACCUMULATOR RETAINER WITH BALL ASSEMBLY LEAK CHECK

Tools Required

J 29714-A Servo Cover Depressor. See Special Tools.

Check

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado