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Home >> Pontiac >> 1995 >> Firebird Formula, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 5.7L >> ECM/Pcm Code Charts >> Code 91, Skip Shift Light >> Notes

Code 91, Skip Shift Light: Notes

When skip shift solenoid is enabled by PCM, transmission can be shifted from 1st to 4th gear only. This maximizes fuel economy.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Skip shift light should not turn on. If light is on, circuit is shorted to ground or PCM is faulty.
  2. PCM should turn on skip shift light.
  3. Checks skip shift light circuit up to PCM connector. If light illuminates, PCM connector is faulty or PCM does not have ability to ground circuit.
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