INFO. ON GMC TRUCK BULLETINS NEW NUMBERING SYSTEM

SUBJECT: INFORMATION ON GMC TRUCK SERVICE BULLETINS

MODELS: ALL MODEL YEARS

Truck Service Bulletins are numbered according to the latest model year of the vehicles involved in the bulletin. The first two numbers in a Bulletin Number represent the latest model year vehicle affected. This means that a bulletin covering 1987-1991 model year vehicles will have 91 as the first number. The second set of numbers represent the UPC Section. The last numbers increase sequentially for the latest model year affected. The example below shows the numbering system:

XX 0A 99 -- -- -- Latest Model UPC Section GMC Number Year Affected (0A=General (99th Bulletin information) Released for Latest Model Year Affected)

To help our dealers keep better track of their bulletins, beginning with this bulletin, GMC Truck will begin publishing a Section Sequence Number on all Truck Service Bulletins. See example below:

BULLETIN NUMBER: 93-0A-01 SECTION: 0A NUMBER: 1 (NEW SECTION SEQUENCE NUMBER) CORPORATE REFERENCE NUMBER: 260104 DATE: SEPTEMBER 1992

Starting in September 1992 all bulletins issued in each section will have a Section Sequence Number assigned to them. This number will increase each time a new bulletin is issued in that section. 1992 and prior model year bulletins published after August 1992 will have Section Sequence Numbers beginning with 1. Since GMC Truck Service Bulletins covering medium duty trucks are mailed only to GMC Truck and Chevrolet medium duty dealers, and bulletins covering light duty trucks are mailed only to GMC light duty dealers, your bulletin binders MAY NOT have all section sequence numbers. To further assist dealers in keeping track of their bulletins, GMC Truck will periodically issue a bulletin index to compare the bulletins against.

NOTE: Campaign Bulletins will not reflect the new Section Number.

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.