NEW ALLISON AUTOMATIC DIPSTICK (NEW DESIGN RELEASED)

SOME ABOVE SUBJECT VEHICLES MAY EXPERIENCE ONE OF THE CONDITIONS LISTED BELOW:

1. TRANSMISSION DIPSTICK BACKS OUT OF THE TUBE HOUSING APPROXIMATELY ONE INCH AFTER PUSHING IT DOWN FOR MEASURING OIL LEVEL.

2. TRANSMISSION DIPSTICK IS DIFFICULT TO REINSTALL AFTER REMOVAL.

IF EITHER OF THESE CONDITIONS IS ENCOUNTERED, IT CAN BE ELIMINATED BY INSTALLING A NEW DIPSTICK. IT HAS A SPIRAL SECTION ADDED IN THE CENTER OF DIPSTICK TO PROVIDE EASIER MEASURING AND PREVENTS BINDING IN THE DIPSTICK TUBE DURING INSTALLATION. EFFECTIVE WITH VEHICLES BUILT AFTER MAY 27, 1988, NEW DIPSTICKS WENT IN PRODUCTION. VEHICLE MANUFACTURING BREAKPOINTS ARE LISTED BELOW:

CHEVROLET 1GBG6D1B1JV116000 GMC 1GDC5D1A2JV529589

NOTE: TO PROVIDE THE PROPER TRANSMISSION DIPSTICK, CHECK THE ENGINE AND TRANSMISSION OPTION CHART TO DETERMINE PROPER PART NUMBER.

----------------------------------------------------------------- TRUCK GAGE PART MODEL ENGINE TRANSMISSION NUMBER ----------------------------------------------------------------- B/C/P/S 5.7L/6.0L/7.0L ALLISON AT545 15624344

C CPC 8.2N/8.2T ALLISON MT643/653 15625853

C CATERPILLER 3208 ALLISON MT643/653 15625854

B/S CPC 8.2N/8.2T ALLISON MT643 15625853

B/C/P/S CPC 8.2N/8.2T ALLISON AT545 15625855 ----------------------------------------------------------------

PARTS INFORMATION

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

FOR REPAIRS TO VEHICLES UNDER WARRANTY USE: LABOR OPERATION: T7695 LABOR TIME: .2 HR.

COPYRIGHT 1988 GMC TRUCK DIVISION, GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.

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.