my speedometer and oil pressure gauge not working any ideas what might cause this?


Asked by May 18, 2013 at 10:40 AM about the 2005 Chevrolet TrailBlazer

Question type: Maintenance & Repair

my oil pressure gauge stopped working and my speedometer works sometimes.changed oil sending unit .when i remove battery cable (hot) to reset everything speedometer works for a little while maybe a day or two then messes up again but the oil pressure gauge still shows maximum pressure reading.

2 Answers


Check the fuses to the instrument panel. Probably a 15amp.

1 out of 1 people think this is helpful.

check electrical speedometer wiring for a short circuit, check your vehicle speed sensor, check your ECM..

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