REVISED SPEEDOMETER DIAGNOSIS CHARTS. Buick Electra/Park Avenue 1985

For 1990-2009 cars

# REVISED SPEEDOMETER DIAGNOSIS CHARTS

#### Vehicles Affected; 1985 Oldsmobile 'C' Models

Bulletin 8-146 dated July 31, 1984 pertaining to speedometer diagnosis charts, contained incorrect information. The figures DO NOT replace the diagnosis charts in the 1985 Ninety - Eight New Product Service Information Manual as stated in the article.

The speedometer diagnosis charts in the manual should be used when diagnosing the digital cluster.

The speedometer diagnosis information in bulletin 8-146 should be used when diagnosing the 1985 Ninety-Eight quartz cluster.

In addition see Figure 1 for printed circuit information for the standard quartz cluster, and Figure 2 for the quartz cluster with the guage package.

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.