Question about 2000 GMC Jimmy

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Sluggish accleration slow accleration after lifting brake (truck does not roll after relasing brake) and does not slip or rev high at all. engine light is on. when put in low or reverse problem does not exist.

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  • psage923 May 11, 2009

    i thought of this also but the engine light is on and small quarter size drops that appear to be tranny fluid are visible when the truck sits overnight. would the engine light come on even for a brake problem??

  • psage923 May 12, 2009

    i thought so. and the fluid is good and just slightly over full. im wondering if possibly i could be losing 1st gear or worse. the fluid it's self i see coming from under the truck looks to be leaking between the tranny and the transfer case for the 4*4. im having the cpu scaned for the code for the reason the engine light is on. and i dont think the light would come on for the brakes.....can it?

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  • Master
  • 710 Answers

SOUNDS LIKE THE BRAKES ARE NOT RELEASING IN THE REAR IF WHAT YOU SAY ABOUT THE PARKING BRAKE IS CORRECT. JACK UP THE REAR OF THE TRUCK AFTER CHOCKING THE FRONT WHEELS AND SUPPORT IT WITH JACK STANDS. AFTER THIS, TURN THE KEY IN THE ON POSITION WITHOUT STARTING AND PUT THE TRUCK IN NEUTRAL. TRY TURNING THE REAR WHEELS. IF THEY BOTH TURN FREELY, THEN CHECK THE FRONT WHEELS. IF THE WHEELS DON'T TURN THEN THE HOSES MAY BE COLLAPSED ON THE INSIDE OR THE CALIPERS ARE FROZEN. HOPE THIS HELPS. KEEP ME POSTED PLEASE. THANKS FOR AN HONEST RATING AND FOR USING FIX-YA.

Posted on May 10, 2009

  • Mark L. Roberts Jr.
    Mark L. Roberts Jr. May 11, 2009

    NOT FOR A BRAKE CABLE. BUT AS FOR THE TRANSMISSION, IF THE FLUID IS LOW, THEN IT IS THE PRIMARY REASON FOR THE LOSS OF POWER. IT NEEDS TO BE FILLED ASAP. CHECK THE FLUID LEVEL WHILE RUNNING IN PARK WITH THE ENGINE HOT. GOOD LUCK. THANKS AGAIN FOR THE RATING. KEEP ME POSTED.

  • Mark L. Roberts Jr.
    Mark L. Roberts Jr. May 12, 2009

    NO, THE CHECK ENGINE LIGHT BEING ON IS A SEPARATE ISSUE. LET ME KNOW

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