1990–1992 Chevy GMC GM Speedometer Circuit Board Repair Kit 85/110/145 MPH

1990–1992 Chevy, GMC & GM Speedometer Circuit Board Repair Kit

Restore a dead or inaccurate speedometer or odometer in a wide range of 1990–1992 GM vehicles. This DIY kit replaces the failing speedometer PCB and the most common wear components used across many Chevy, GMC, and other GM instrument clusters.

Supports 85, 110, and 145 MPH speedometer versions. Fitment depends on the instrument cluster style — compare your board to the reference photo to confirm.

DIY Notice: Soldering is required. You will transfer 2 IC chips from your original board.

Key Features

• Used across multiple 1990–1992 Chevy, GMC & GM vehicle clusters
• Supports 85, 110, and 145 MPH speedometer versions
• New PCB plus capacitors, resistors, diode, and crystal oscillator
• Includes new odometer motor driver IC and wiring harness plug
• Step-by-step installation instructions included

Common Symptoms This Fixes

• Speedometer stuck at 0 or reading incorrectly
• Odometer not turning or intermittent
• Cluster works only sometimes
• Failed or leaking capacitors on the original board
• Intermittent or dead speedometer/odometer operation

Vehicle Compatibility

This repair kit is used across many 1990–1992 GM vehicles, including Chevy, GMC, and other GM models equipped with the 85/110/145 MPH instrument cluster. Because GM shared cluster designs across multiple platforms, compatibility is determined by the instrument cluster PCB, not the specific vehicle model.

Compare your original board to the reference photo below to ensure correct fitment.

Installation Requirements

• Ability to de-solder and solder components
• Transfer of two IC chips from your original PCB
• Early-style odometer plug is replaced with the included updated plug

Verify You Have the Correct Board

1. Compare your original board to the reference photo below.
2. Need help? Contact us through our Contact Form.

FAQs

Will this fix my speedometer?
If the PCB is the failure point and your original IC chips are good, this kit typically resolves the issue.

How do I confirm the PCB is bad?
A quick diagnosis of the cluster will confirm whether the board is the root cause. These boards have a high success rate once properly identified.

Are all IC chips available new?
One chip is available as new old stock; the remaining firmware/calibration chips must be transferred from your original board.

Can you repair my board for me?
Yes — we offer a done-for-you repair service if you prefer not to DIY.

Add to cart when you're ready, or message us to confirm the correct option.