Chevrolet Silverado / GMC Sierra. Service manual — part 1116

Tools Required

J 36850 Transjel Lubricant. See Special Tools.

Installation

Fig. 342: View Of Input Internal Gear, Reaction Shaft & Sun Shell
Courtesy of GENERAL MOTORS CORP.

1. Install the reaction sun shell (670) into the reaction sun gear.

2. Install the thrust bearing (669) using J 36850 onto the reaction carrier shaft, tangs up,

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

toward the shaft. See Special Tools.

3. Install the input internal gear (664) and reaction carrier shaft (666) assembly into the sun

gear shell. Index the reaction carrier shaft spline into the reaction carrier.

INTERNAL TRANSMISSION SPEED SENSOR ROTOR REPLACEMENT

Tools Required

J 8433 Two Jaw Puller. See Special Tools.

J 21427-A Speedometer Gear Puller Adapter

J 36352 Speed Sensor Rotor Installer Kit. See Special Tools.

Removal Procedure

Fig. 343: Identifying Output Shaft Seal & Output Shaft Sleeve
Courtesy of GENERAL MOTORS CORP.

1. Inspect the internal transmission speed sensor rotor (699) for cracks or damaged teeth.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

2. Inspect all splines on the output shaft (687) for cracks or damaged splines.

3. Remove the output shaft seal (691) and the output shaft sleeve (690) (model dependent)

2WD units only.

Fig. 344: Using J 8433 & J 21427-01 To Remove Internal Speed Sensor Rotor
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado

4. If the internal speed sensor rotor (699) is damaged, replace it.

5. Using J 8433 with J 21427-01 , remove the internal speed sensor rotor (699) from the

output shaft (687). See Special Tools.

Installation Procedure

Fig. 345: Pressing Internal Speed Sensor Rotor Onto Output Shaft
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Do not re-use an internal speed sensor rotor that has been

removed.

2008 Chevrolet Silverado 1500

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

Silverado, Sierra & Silverado