----------- Owners of 1986-91 H Models and 1985-90 C Models with the standard instrument cluster may comment that the odometer is not sufficiently lit to be readable at night, even with the dimmer at full intensity.
----------- Replace the centre four bulbs (blue/green) at the bottom of the cluster with clear bulbs, Trade Number PC194. This clear two candlepower bulb will provide enough white light to improve odometer lighting.
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.