1989 Geo Tracker Base, StandardFACTORY OEM SERVICE PROCEDURE

Vehicle Speed Sensor (Metro)

Disconnect battery. Remove instrument cluster. Connect ohmmeter between "GND" screw and "RSW" screw of combination meter. See Fig 1 . Turn cable joint of speedometer with a screwdriver. Ohmmeter should vary between infinite and zero ohms of resistance 4 times for every one revolution of speedometer cable joint.

Fig 1: Vehicle Speed Sensor Terminal Identification
G121711Courtesy of GENERAL MOTORS CORP.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.