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running lights wont work but brake lights do.

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Old 03-13-2010, 09:52 AM   #1
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Default running lights wont work but brake lights do.

Checked the wires they all look good and fuses look good. Any ideas?
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Old 03-16-2010, 08:09 PM   #2
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still no running lights
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Old 03-16-2010, 09:27 PM   #3
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check your bulbs... if one blows the other one can blow or blows a week later but check them and if they apear toi b goood test to see if u have power at the plug...
do the high beams work?
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Old 03-17-2010, 10:43 AM   #4
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everythiing up front works its the rear lights that's ****ed up.. turn signals work but light only illuminate when brake is pushed. Got pulled over twice last night within ten minutes for no tail lights. Luckily I wasn't drinkin ..
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Old 03-17-2010, 03:48 PM   #5
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The bulb in our tail lights is a dual filament 3157 bulb, the rear running lights are in the same bulb as the brake light and turn signal( last 2, use the same filament) but the running lights are on ALOT more so it is normal that filament burnt out first.

If the truck is a 97 to early 00 ( up on till about march of 00) there are 2 bulbs for running/ brake&turn. best way to find out is turn on ur headlights and turn signal and take a look, if it is just flashing closer to the tail gate on back its 1 bulb, if its flashing closer to the rear wheel well its 2 bulbs and i believe the extra bulb is a 3156 same bulb but 1 filament.

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Old 03-19-2010, 08:55 AM   #6
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When I had no running lights, it was some type of resistor/relay(???) located back of the front bumper on the driver side. It' is white/cream and U shaped. I picked one up at the junk yard for $20. Over $100(Can) at the dealer.
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Old 03-20-2010, 09:48 PM   #7
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front bumper??? front lights work fine just no rear running lights
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Old 03-22-2010, 12:27 PM   #8
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Sorry, when I saw running lights, I thought you were talking about daytime running lights. My mistake.
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Old 03-22-2010, 12:59 PM   #9
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Check the plug where the tail-light harness plugs into the rest of the wires. It's toward the front driver side of the spare tire under the bed of the truck. Mine was partially unplugged and only the brake lights would work, no tail-lights. If its plugged in unplug it and check for voltage to see if you're getting any juice back there.
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Old 03-22-2010, 08:52 PM   #10
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ive checked everything known to man. going to buy new bulbs tomorrow and hope that fixes it maybe just that phase of the bulb is blown
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