SHIFT CONTROL ROD INTERFERENCE REDESIGNED ROD 700R4 TRANS

MODELS: 1983-1985 T TRUCK EQUIPPED WITH 700-R4 AUTOMATIC TRANSMISSION

The transmission shift control rod (Figure No. 1) on some 1983-1985 T Trucks equipped with 700-R4 automatic transmissions can make contact with the exhaust manifold and/or the transmission bell housing. This may cause a buzzing or scraping type of noise when the vehicle gear selector is placed in the OD range and the vehicle is accelerated. A revised shift rod, P/N 15590334, and swivel clamp, P/N 15590333, are now available for 1983-1985 T Trucks to repair this condition. Beginning with the following VIN breakpoints, 1985 vehicles were produced with the revised parts:

Shreveport F8515400

Pontiac F0511716

Moraine F2511526

INSTALLATION PROCEDURE

1. Position the steering column shift lever in neutral gate notch.

2. Set transmission lever (A) in neutral detent.

3. Assemble clamp spring washer, screw, and swivel clamp to transmission control lever (B) and control rod.

4. Hold swivel clamp (C) flush against transmission control lever (B) and finger tighten clamping screw against rod.

No force should be exerted in either direction on the rod or transmission control lever (B) while tightening the clamping screw.

5. Tighten screw to 16 to 21 ft. lbs.

6. With shift lever in the park (P) position, the parking pawl should freely engage within the reaction carrier internal gear lugs. The vehicle should only be able to be started in park (P) or neutral (N) positions. The shift indicator needle should align properly with all ranges.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.