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eddie guerrero Posted on Feb 27, 2015

I have a 2002 chevy suburban. 2wd 1500LS. 5.3L. While driving on highway last night transmission failed. parked and turned off. Disconnected battery, checked fluid. Restarted and it went into gear but only went 100 feet and failed again. Itcontinued to repeat this.

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Dan Perez

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  • Posted on Mar 02, 2015
Dan Perez
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Not enough information to go by, so for starters, check the transmission fluid level, check for engine code(s), check for defective O2 sensors, check for defective catalytic converter, check for blown/missing fuse for transmission, check for defective transmission switch. When was the last time the vehicle had a tune up? Was the vehicle serviced, how recent (might have a loose connector)? Is the gas cap serviceable? These would be where I would start looking, then worse-case-scenario might be a bad transmission. Otherwise, the information given indicates that the vehicle went into limp mode.

  • Dan Perez
    Dan Perez Mar 02, 2015

    Not enough information to go by, so for starters, check transmission fluid level, check for defective fuse (PCM #15 (10amps). If this doesn't solve the problem, then check for engine code(s). If no codes exists for defective O2 sensors nor defective catalytic converter(s), I would pull the distributor (make sure to make reference marks before pulling) and verify for any loose components, especially the distributor shaft (replace if necessary). If none of these solves the problem, I recommend taking the vehicle to a reputable transmission shop for diagnostics.

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