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Why does it sit at 900 rpm when the vehicle is off completely ? It's a 1996 GMC Jimmy SLS.

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  • GMC Master
  • 354 Answers

Sometimes the gauges freeze when the power is removed. The question to TOU is does it go to zero when the key is on. If it does, don't give it another thought.

Posted on Mar 29, 2015

  • 5 more comments 
  • Jeff Crowner Mar 29, 2015

    When you start it it goes to about 1500 rpm and and reads 1500 rpm but after you shut off it goes to about 700 rpm and will slowly go back up to around 1000, have no clue what it is. Thanks for the help if you can
    Sincerely, Jeff

  • Vincent Competello
    Vincent Competello Mar 29, 2015

    What does it read when the ignition is just turned on and the engine not started?

  • Jeff Crowner Mar 29, 2015

    About 700-900

  • Vincent Competello
    Vincent Competello Mar 29, 2015

    Any other gauges or electrical accessories acting up?

  • Jeff Crowner Mar 29, 2015

    None

  • Vincent Competello
    Vincent Competello Mar 29, 2015

    Okay, at any time does the needle go to zero? Also, when idling, what does the gauge read? Text me is you want because it is easier. (347) 455-1460

  • Vincent Competello
    Vincent Competello Mar 29, 2015

    I've ben trying to help youu but it seems you have stopped responding. The text number is no longer valid. I believe we are done!

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

bryant329
  • 125 Answers

SOURCE: TPS in a 1998 GMC Jimmy

the tps is ususally at the side of the throttle body opposite where the throttle cable / tv cable mount.
sometimes it won't start, run, or run erratically. there are ways of testing this unit (by output voltage) before you commit to buying a new one. to test it you will need a dvom (digital volt ohm meter).

just a note: straight from the book... "a broken or loose tps can cause intermitten burst of fuel from the injector and an unstable idle because the ecm thinks the throttle is moving."

Posted on Sep 22, 2008

geraldo14200
  • 48 Answers

SOURCE: How do I remove the rear axle to replace the seal 1996 jimmy

You will have to remove the differential cover on the rear end, in the center of the gear cluster you'll have to rotate your axle until it exposes the ends of the axle shafts, push in the axles as far as you can from the brake pad assembly area, then, there this a C clips that slips into a groove on the end of the axle, you'll have to reove the C clip to pull out the axle.

Posted on May 12, 2009

  • 61 Answers

SOURCE: 1996 GMC Jimmy will not shift into overdrive.

4th gear failure is a common problem with this transmission, assuming it is an automatic. You should have the vehicle checked for codes by a qualified repair center with the proper scan tool. Also, check fluid level and condition. More often than not, the trans loses 3rd and 4th gear, as these are working off the same set of clutches. 3-4 clutches apply in 3rd, and when the 4th shift is made the 2-4 band applies giving you overdrive. If you have no engine braking in manual 3rd, you definitely have a mechanical failure, no 4th could be an electrical, or mechanical fault.

Posted on Nov 18, 2009

  • 52 Answers

SOURCE: 1996 gmc jimmy won`t shift from 1st to 2nd

IF the abs dash light is on and if the speedometer is sluggish or not working at all, it is probably a bad speed sensor on the transmission. and easy fix under $40 for the part. Mine was stuck in second gear for a while then worked then it stuck in first gear and i had the CHECK ENGINE light on.

Posted on Dec 15, 2009

  • 1201 Answers

SOURCE: wath P1406 Code means on a GMC jimmy 1996,

It's an egr valve problem (exhaust gas return) egr position sensor.
Take off the egr valve and turn it over and see if there is carbon build up in the ports, if there is clean it out with a pipe cleaner and a little carbon cleaner, just spray a little into the ports and clean it out. If that doesn't cure the problem, then either the sensor needs replacing, and or the egr valve.

Posted on Apr 15, 2010

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