SERVICE GUILD: NEW MEM-CAL FOR INCORRECT MPG DISPLAY ON CRT

MODELS AFFECTED: 1988 RIVIERAS AND REATTAS

The CRT display for "Fuel Economy MPG Average," on 1988 Rivieras and Reattas may be computed from 15% to 20% lower than the vehicle is actually getting.

A recalibrated Mem-Cal has been developed to correct this condition, and parts are currently available through General Motors Service Parts Operations (GMSPO) under the following part numbers:

SCANNER OR CRT AXLE SALES CODE MEM-CAL I.D., IF MODEL I.D. LOCATED ON THIS MEM-CAL IS SERVICE APPLICATION AXLE DECK LID DECAL INSTALLED PART NO. ----------- ---- -------------- --------- -------- 1988 Riviera 2.84 F17 3514 16123486 1988 Riviera 2.97 F79 3524 16123487 1988 Reatta 2.97 F79 3534 16123488

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.