COLD START DRIVEABILITY, TIP-IN SAG, HESITATION OR SURGE
SOME 1986 CALAIS MODELS EQUIPPED WITH 3.0L MPFI ENGINE (VIN CODE L)
Some 1986 Calais models equipped with a 3.0L MPFI engine (VIN Code L) may experience a condition described as poor cold driveability, tip-in sag, hesitation or surge.
If any of these conditions are encountered and cannot be repaired using currently published diagnostic and service information, it may be necessary to install a new service prom, part no. 16059958.
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.