2-4 Band Servo Piston Pin Length Check

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

J 33037: 2-4 Intermediate Band Apply Pin Gauge

Fig 1: 2-4 Servo Assembly

GM5430

Courtesy of GENERAL MOTORS CORP.

Disassemble the 2-4 servo assembly. Remove the apply pin retaining ring (24), the servo apply pin washer (23), the servo apply pin spring (22) and the 2nd apply piston pin (13).

Fig 2: Locating Band Apply Pin, Pin Gage, & Servo Cover Retaining Ring

GM7756

Courtesy of GENERAL MOTORS CORP.

Install the band apply pin (13) and the J 33037: pin gauge (1).
Install the servo cover retaining ring (29) to secure the tool.

Fig 3: Identifying Gage Slot

GM7757

Courtesy of GENERAL MOTORS CORP.

Apply 11 N.m (98 lb in) torque. If the white line appears in the gauge slot (1), the pin length is correct.
If a new pin is needed, refer to 2-4 Band Servo Piston Pin Selection in order to determine correct pin length.

Special Tools

J 33037: 2-4 Intermediate Band Apply Pin Gauge

Fig 1: Locating Band Apply Pin, Pin Gage, & Servo Cover Retaining Ring

GM7756

Courtesy of GENERAL MOTORS CORP.

Install the band apply pin (13) and the J 33037: pin gauge.
Install the servo cover retaining ring (29) to secure the tool.

Fig 2: Identifying Gage Slot

GM7757

Courtesy of GENERAL MOTORS CORP.

Apply 11 N.m (98 lb in) torque. If the white line appears in the gauge slot (1), the pin length is correct.
If a new pin is needed, refer to 2-4 Band Servo Piston Pin Selection in order to determine the correct pin length.