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Showing results for tags 'repair help'.
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Help with limp mode issue
Mikeysev91 posted a topic in 1988-1999 Chevrolet & GMC C/K GMT400 Platform
I own a 1991 gmc 2500 454/4L80e truck with 37k miles. I’ve recently run into issues with the truck going into limp mode every time I drive it. Essentially what happens is it will start and drive around fine(other than hard shifts) and have all gears for the first 15-20 minutes of driving. As soon as I come to a stop after that timeframe I will get the CEL illuminated and the truck will be in limp mode with codes; 24. VSS Signal 73. Trans Temp 85. PROM Read fail 87. PROM I’ve already investigated the pass through and it was leaking. I’ve cleaned it out and tried with no difference, from the bottom of the truck the wiring looks pretty good. At this rate I don’t know where to go in terms of diag, wondering if anyone else has seen this issue? , also any suggestions are more than welcome -
I'm not sure I'm posting in the right area. Forgive me if so. I dont know a whole lot about cars but my boyfriend is having some issues with the back brakes on his Yukon. I believe they are drums. But he looked at them tonight & it seems that a big chunk of one of his brake pads has broken off. He says they keep losing up or something. Like they have a self adjuster thing on it that is supposed to tighten up as the brakes wear down. But it doesn't seem to be adjusting. Just getting looser. Would anyone have any clue why this would be happening? Could it be the wrong size on there?? Auto Zone says either 10 in or 11 in. 11 in was what was on there b4 he changed them, but could that have been wrong? Maybe previous owner had wrong ones on there? Sorry if this is confusing. Any help would be appreciated. It's a 1999 Yukon
