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1997 Chevrolet Silverado Tail lights

Tiny
CHEVYTRUCKK
  • MEMBER
  • 1997 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
I'm having problems with my taillights. When the truck is on the tail lights don't work. But my brake lights and reverse lights work. I don't think the bulbs are out. Fuse? Wiring problem? Could someone tell me what it could be. And where to look and how to fix it.
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Thursday, August 13th, 2015 AT 9:07 AM

9 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Always check the bulbs first as the filament can be burned out then check for ashort or see if power is coming to lights. Check fuse 9 as well it's the brown wire to taillights.
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Thursday, August 13th, 2015 AT 9:34 AM
Tiny
CHEVYTRUCKK
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  • 6 POSTS
Wouldn't the lights be browned or look burnt?
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Thursday, August 13th, 2015 AT 11:21 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Yes and usually the filament is gone.
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Thursday, August 13th, 2015 AT 11:23 AM
Tiny
CHEVYTRUCKK
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  • 6 POSTS
Then the bulbs aren't bad. They look fine
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Thursday, August 13th, 2015 AT 11:25 AM
Tiny
CHEVYTRUCKK
  • MEMBER
  • 6 POSTS
Could it be a loose ground wire? Looking underneath the truck I saw A black wire hanging. I'm guessing it's a ground wire. Don't know where it goes. It's just hanging. Would that make the running lights not work but still the brake lights?
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Thursday, August 13th, 2015 AT 11:30 AM
Tiny
CHEVYTRUCKK
  • MEMBER
  • 6 POSTS
Also my dashboard lights are giving me trouble. All interior lights work fine on the switch. But the lights for the gauges and speedometer and all that will work sometimes. Every now and then they would come on. But mostly they don't work. Any idea there?
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Thursday, August 13th, 2015 AT 11:41 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuses as well I thought I put it in last reply check in car and under hood. The black wire attaches to frame and may be your problem try to reattach it as well
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Thursday, August 13th, 2015 AT 1:48 PM
Tiny
CHEVYTRUCKK
  • MEMBER
  • 6 POSTS
Nothing is working. Need a wiring schematic to follow all the wires
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Thursday, August 13th, 2015 AT 7:21 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
See pic there is s circuit board on back frame that may be bad as well that hs a few plug ins so check to see if power is coming in from front it may not be going out of it. It is not shown in pic.
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Friday, August 14th, 2015 AT 8:40 AM

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