To:Zone Managers

DEFECT INVOLVED

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1984 through 1988 Pontiac model vehicles equipped with cruise control on certain gasoline & diesel engines. A small nylon bushing in the cruise control servo bail (bracket) may slip out of place. This will not affect the operation of the cruise control, but it may cause intermittent increases in engine speed or dieseling (engine run-on with ignition off). If the vehicle is not serviced and the nylon bushing remains out of place, the servo rod assembly could wear through the bail. If the rod wears through the bail, it may catch on other engine components and possibly result in a stuck throttle. Although the vehicle can still be stopped with the service brake, an unexpected loss of accelerator control could result in a vehicle crash.

VEHICLES INVOLVED

Involved are certain 1984 through 1988 Pontiac vehicles equipped with Cruise Control (RPO K34) and 5.OL or 5.7L engines within the following VIN breakpoints:

Engine Beginning Up To
Year Model Model Name VIN Codes VIN And Including

1984 G Grand Prix N EB200005 EB250584
N E2205277 E2306770

B Parisienne N EX202262 EX225153
N E9701426 E9743876

1985 B Parisienne N FX200001 FX268502

1986 B Parisienne Y GX201816 GX285088

1987 B Parisienne Y HA200001 HA207717
Y HX200001 HX211350

1988 B Parisienne Y JA200001 JA202809
Y JX200001 JX200001
Vehicles with Part Number 25074629 or Part Number 12335036 replacement Cruise Control Servos do not require the Bushing Kit called for in this Product Campaign Bulletin. Pontiac has eliminated a number of vehicles from this campaign which it was able to identify from warranty records as having the above replacement Servos installed. However, a large number of vehicles may have had the P/N 25074629 and P/N 12335036 Servos installed beyond warranty; those vehicles must be identified by inspection.


PARTS INFORMATION

Parts required to complete this campaign are to be obtained from General Motors Service Parts Operation (GMSPO). To ensure that these parts are obtained as soon as possible, they should be ordered on a C.I.O. order with no special instruction code, but on advise code (2).

Quantity
Description Part Number Per Vehicle

Bushing Kit 25111444 1


CLAIM INFORMATION

*Other
Failure Labor Labor Labor
Operation Code Operation Hours Hours

Inspect Cruise Control
Servo Bail Only 96 V5470 .2 .1

Inspect Cruise Control Servo Bail and Install
Bushing Kit 96 V5471 .2 .1
PRODUCT SAFETY CAMPAIGN 88-C-21 SERVO BAIL BUSHING
ORIG. TO DO


01 Boston 3532
02 New York 3211
03 Philadelphia 3063
04 Washington 4631
06 Pittsburgh 3759

EASTERN REGION 18.196


07 Detroit 3714
09 Cincinnati 4696
10 Chicago 5209
15 Minneapolis 1786
13 Kansas City 1759

CENTRAL REGION 17.164
ORIG. TO DO


17 Orlando 3187
18 Atlanta 6288
19 Memphis 2597
21 Dallas 2917
22 Houston 2548

SOUTHERN REGION 17,537


23 San Francisco 919
24 Los Angeles 830
27 Denver 620


WESTERN REGION 2,369


U.S. TOTAL 55.266