For 1990-2009 cars

# DRIVEABILITY CONCERNS DCS REFERENCE BULLETINS

#### VEHICLES AFFECTED: 1987 C, H AND N WITH 3.0L OR 3.8L

1987 CB-HB W/3.8 LITRE AND NB W/3.0 ENGINES

Recently several dealers have advised the Technical Assistance centre (T.A.C) that some 1987 C, H and N Body owners are still reporting driveability problems.

Such reports diminished after several related service bulletins were published. They are listed below, and we remind you to refer to them when these service questions arise. If you are unable to resolve the condition after following these procedures please notify T.A.C. and we will continue to work with you.

Bulletin Number Title ------ ----- 87-0-106 Gasolines to keep port fuel injectors clean 87-630-104 Engine does not stay running on initial cold 87-638-103 start 87-6-112 Engine miss, backfire, hard start, hesitation, or 87-638-114 stall 87-630-107 Engine cranks but won't run/misfire diagnosis 87-638-111

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.