FUEL INJ. WIRES MAY BECOME TRAPPED WHEN REINSTALLING AIR

Subject: FUEL INJECTOR WIRES MAY BECOME TRAPPED WHEN REINSTALLING THE AIR CLEANER (TWIST WIRES ONCE)

Model and Year: 1988-93 LIGHT DUTY TRUCKS

THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 93-86-6C, DATED JAN. 1993. ALL LIGHT DUTY TRUCKS HAVE BEEN ADDED AS WELL AS THE REFERENCED ARTWORK REVISED.

CONDITION:

--------- When air cleaner is removed on 1988-93 Light duty trucks, the potential for trapping the injector wires between the air cleaner and the throttle body or between the extension ring and throttle body is present during reinstallation (Figure 1).

CORRECTION:

---------- To reduce the possibility of such an occurrence, especially if the reason for removing the air cleaner is a pinched wire, carefully remove the injector wires. Route the green and white wire under the blue and red wire and carefully twist once (Figure 2). Reconnect injector wires.

One twist will reduce the slack in the injector wires so that there is less chance of them being trapped between the mating surfaces dufing assembly.

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.