How to reset your speedometer & tach on a 2005 Pontiac Montana.

bad neutral safety switch Here's the part. http://www.autozone.com/batteries-starting-and-charging/neutral-safety-switch/duralast-neutral-safety-switch/pontiac/montana-2wd/2005/6-cylinders-e-3-4l-sfi/476559_0_0

2003 to 2006 GM had bad step motors in the instrument cluster !
How to repair GM Instrument Cluster Speedometer Gauge Stepper

SWITCH THE IGNITION ON ENGINE OFF.REPEATEDLY PRESS SMALL BUTTON UNDER LOWER RIGHT SPEEDOMETER UNTIL OIL LIFE IS DISPLAYED.THEN PRESS AND HOLD THE SAME BUTTON FOR 10 SECONDS UNTIL THE REMAINING ENGINE OIL LIFE RESET MODE IS DISPLAYED.RESET PROCEDURE MUST BE CARRIED OUT WITHIN 30 SECONDS. PRESS SMALL BUTTON LOWER LEFT TACHOMETER TO DISPLAY RESET TO CONFIRM RESET PRESS SMALL BUTTON UNDER RIGHT SPEEDOMETER. TO CANCEL RESET PRESS SMALL BUTTON LOWER LEFT TACHOMETER TO DISPLAY CANCEL THEN PRESS SMALL BUTTON LOWER RIGHT SPEEDOMETER.THEN SWITCH IGNITION OFF.

Pontiac Montana, 2005
With the ignition key in RUN but engine off, repeatedly push the trip reset button until OIL is displayed on the driver info center. Once OIL is displayed, push and hold the reset button for five seconds. The number will disappear and be replaced by 100% of oil life remaining. The percentage will return to 100 and oil life indicator will be reset. Repeat steps if not reset to 100.
Good luck

Turn key to the on position and press the gas pedal to the floor 3 times.then turn key back off then start it if it blinks at you 3 to 4 times real fast its reset..

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