1992 Pontiac Grand Prix speedometer

1992 PONTIAC GRAND PRIX
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MADMAX255
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  • 1 POST
Electrical problem
1992 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic

The speedometer stopped working on 1992 grand prix LE.Replaced speed sensor and also instrument cluster,still no speedometer.Is there anything else I can check?
Sep 28, 2010 at 6:06 AM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
check dark green wire coming from the ECM. if its good and sensor/cluster have been replaced then most likely ECM is faulty.
Sep 28, 2010 at 12:35 PM
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