1974 - 1975 Corvette: Service Bulletin: Stripped Speedometer Driven Gear, 1974-1975 Corvette with 4-Spd. Transmission

Model Year: 1974-1975
Subject: Stripped Speedometer Driven Gear, 1974-1975 Corvette with 4-Spd. Transmission
Source: Chevrolet Dealer Service Technical Bulletin
Number: 75-T-3
Date: Jan. 17, 1975

TO: ALL CHEVROLET DEALERS

On 1974 and 1975 Corvettes with 4-speed transmission, an inoperative speedometer due to a stripped driven gear may be the result of relatively 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
6476870 ---- Key

For service, vehicles exhibiting this problem may be corrected by the following method:

  1. Remove driven gear and replace with new gear of same part number and color.
  2. Remove and discard production adapter and key and install new adapter and key.

Chevrolet Motor Division
General Motors Corporation

Article ID: 684
Created: August 1, 2014
Last Updated: August 1, 2014
Author: Rob Loszewski

Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article.php?id=684