1974 - 1975 Corvette: Service Bulletin: Stripped Speedometer Driven Gear
Subject: Stripped Speedometer Driven Gear
Model and Year: 1974 - 1975 Corvette with 4-Speed Transmission
Source: Chevrolet Dealer Service Technical Bulletin
Bulletin No: 75-T-3
Date: January 17, 1975
To: All Chevrolet Dealers:
On 1974 and 1975 Corvettes with 4-speed transmission, an inoperative speedometer due to a stripped riven gear may be the result of high internal friction in the speedometer adapter.
A new low friction adapter and key will be phased into production in January, 1975 and will be available for service under the numbers listed below:
1565211 ---- Adapter
6476970 ---- Key
For service, vehicles exhibiting this problem may be corrected by the following method:
- Remove driven gear and replace with new gear of same part number and color.
- Remove and discard production adapter and key and install new adapter and key.
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.
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