Question about 2002 Pontiac Montana

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2002 Pontiac Montana trans problem

At 70 mph, My 2002 Pontiac Montana showed 1500-1700 rpm on the tach. Suddenly it shows 2100 rpm at 70 mph. Do I have a problem with the trans?

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  • Pontiac Master
  • 1,250 Answers

No I don't think so , it is only the torque converter clutch engaging and disengaging due to engine load. if you want to test this. go on steady speed over 50 mph no gas pedal movement. touch lightly the brake pedal but not braking and release . during this see the rpm drop down and raise

hope it helps

Posted on Mar 24, 2014

Testimonial: "First, Thanks for the Help! Now, a little more history. I had the trans rebuilt by a reputable local trans shop. When I got it back, it showed each gear working at 1500-1700 rpm at normal speed. Then months later, one day I noticed that, only in OD, The rpm were 2100-2200 at 65 mph. Question: Have I lost OD, or is this higher rpm a sign of something else wrong with the trans? Thanks again. (Dennis with 2 Ns)"

  • Denis Houle
    Denis Houle Mar 25, 2014

    to know it is to take the shifter down to D3 if

  • Denis Houle
    Denis Houle Mar 25, 2014

    you feel RPM goes up you still have the fourth gear or OD

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SOURCE: 2002 Pontiac Montana Thermostat replacement

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SOURCE: 2002 pontiac montana passanger pwr window

I beleive you need to change the Power Window Switches Module in the drivers side door panel, as these connections are interlinked within this module and it is usually the first part that fails. Especially that you already changed the switches & motor in the passenger door and it still does not work. Once you remove the dual switch module in the driver's side door, you will understand what I mean. Plus it is really easy to access. Good luck! I have the same model, Claude

Posted on Jun 16, 2010

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