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1991 Chevrolet Blazer Question: running lights keep blowing the fuse

 

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jujubailey, Chester, VA, June 09, 2011, 06:39
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what can I check to fix my rear running lights keep blowing the fuse it's a 1991 gmc jimmy had to put different type car in the drop down cause it let me put year, make, but gave no choice for model

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  • Answer #1

    dandd June 09, 2011, 11:35
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     Master

    Generally, the first thing I check are the light sockets to make sure that there isn't a defective bulb or socket causing the short. Then I try to figure out which side it is. Most running light circuits are tied in to the head light and or taillight circuits which have separate fuses for the LH side and RH sides. So try to isolate which side is the culprit. Then once you know which side it is is, and if the bulbs are ok, then remove each socket and check for any chafed or rubbing wires on metal and do this process from the rear most light up to the front of your Jimmy. If this fails then disconnect the light switch and try using jumper wires to enable the lights, if this works with out shorts, then it is a switch issue, which I find to be the least common, which is why I check it last

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  • Answer #2

    Superbob June 09, 2011, 11:43
     Master

    Check for a shorted bulb or bulb socket or a short (from damage) in the wiring.
    If you want to find a GM specialist, here's our directory link for you:
    https://repairpal.com/directory?address=23831&car_bra...

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