Chevrolet Silverado / GMC Sierra. Service manual — part 1109

Fig. 317: Checking Reaction Carrier Pinion End Play With Feeler Gage
Courtesy of GENERAL MOTORS CORP.

4. Check the reaction carrier pinion end play. The end play must not exceed 0.61 mm (0.024

in).

Inspect the reaction carrier for the following conditions:

Pinion gear damage

Proper pinion staking

Excessive pinion washer wear

Keystoned pinion gears

5. Ensure that the pinions turn freely.

IMPORTANT: Inspect all pinions, either 4 or 5 depending on model.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

Fig. 318: Illustrating Proper Inspection Of Reaction Carrier Captive Thrust Bearing
Courtesy of GENERAL MOTORS CORP.

6. Inspect the reaction carrier captive thrust bearing for wear or damage.

1. Without touching the pinion gears, place a bushing or an output shaft sleeve (690) onto

the bearing race, and turn it with the palm of your hand.

2. Any imperfections will be felt through the bushing.

REACTION GEAR AND CARRIER INSTALLATION

Tools Required

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

J 36850 Transjel Lubricant

Installation

Fig. 319: View Of Reaction Carrier/Support Thrust Bearing Assembly
Courtesy of GENERAL MOTORS CORP.

1. Install the reaction gear support to case bearing (692) onto the internal reaction gear support

(685). Retain the bearing using J 36850 or equivalent.

2. Install the internal reaction gear (684) and the internal reaction gear support (685) into the

case.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

3. Install the reaction carrier/support thrust bearing assembly (683) into the internal reaction

gear support (685). Retain bearing with J 36850 .

Fig. 320: Identifying Reaction Carrier Assembly
Courtesy of GENERAL MOTORS CORP.

4. Install the reaction carrier assembly (681) into the internal reaction gear.

LOW AND REVERSE CLUTCH SPACER PLATE SELECTION

Tools Required

J 8001 Dial Indicator Set. See Special Tools.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado