Question about 1993 GMC Sierra K1500

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HAVE A 1999 GMC SIERRA 1500 WONT MOVE IN FOWARD OF REVERSE

WE DROVE IN LAST NIGHT AND WHEN IDLING IN SHED HEARD A SLIGHT NOISE FROM THE TRAN AREA . STARTED THIS MORNING NO NOISE ALL SEEMED OK DROVE ABOUT 2 BLOCKS TO SHOP AND PARKED TO LET TRUCK WARM UP AND WHEN WE PUT IT BACK IN GEAR IT WOULDN'T MOVE IN FOWARD OF REVERSE. WE TURN IT OFF FOR ABOUT 3 MINUTES AND STARTED IT UP AND ALL WORK. WE POWER BRAKED AND SPUN THE TIRES BUT AGAIN AFTER ABOUT 2 MINUTES HEARD A LIGHT NOISE FROM THE TRANSMISSION AND AFTER ANOTHER MINUTE NO REVERSE OF FOWARD . IT IS JUST KEEPS CYCLING LIKE THIS ANY IDEAS

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  • John Ball May 11, 2010

    Usually you dont lose both foward and reverse gears at the same time and then all works fine.If your truck is a 4-wheel drive you may have transfer case issueswhere it could be worn and popping in and out.Put selector in 4x4 and see if the it still does it and let me know.

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The torque converter has gone out.

Posted on Mar 05, 2009

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