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Check the bulbs. I'm not sure on a 97, but there used to be a connector at the back that connected the wires from the front to the lights. At the back edge of the bed underneath. These can become corroded. Had any trailer lights added? Lost the ground wire underneath, caught it on something maybe? Since it is the tail and brake lights both, it has to be at the back end. Simplest solution is to stick a new bulb in just to make sure. You have probably already done this, but I mention it anyway.
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Hazard lights out on 1992 GMC Sierra Signals work brake lights work could it be a relay If not what else?
Fuse or 4 way flasher unit there are 2 flashers on for turns one for 4 ways
You have a 98 GMC Pickup and one brake light won't work Fuse bulb and tail light assembly all check out and contacts are clean and it still won't work Front blinker blinks fast on bad side?
Sounds like you've lost the ground connection to that light. Identify which of the wires is ground and run a temporary ground to verify.
Location of backup switch on 1982 gmc pickup 3 speed transmission?
left side of transmission
How do you replace the emergency brake release cable on a GMC suburban?
Your GMC Suburban emergency brake release cable is held in place with a swivel nut on each end of the cable. Loosen the swivel nut to remove the cable. Reverse the process to install the new emergency brake release cable.
How to fix Brake light circuit board Chevy 1500?
There was a couple years that Chevy and GMC used a circuit board in the tail light assembly. It was a bad design. We had several in our fleet at work and many went bad. They are available from the dealer new. Not much you can do to repair the old one, just replace it with a new one.
GMC JIMMY why are your dash tail and parking lights not working but the brake blinker and head lights work fine?
The GMC dash tail and parking lights are on a different fuse from the brake lights. Check the fuses for a possible blown fuse.
Where is the ground wire for tail lights dashboard lights and blinkers?
I have a 1983 GMC Sierra it has no dash,tail lights an brake lights are very dim
How do you override drl lights on 1997 gmc pickup 1500?
parking brake, push it down a touch
Why wouldn't you have brake and tail lights when head lights are turned on 1997 GMC?
Check bulbs Check fuse for parking/tailights Check brake light fuse
Is there a bulb in the third brake light or a fuse that maybe blown this question is or the 202 gmc envoy?
the fuse should be for all brake lights and tail lights if only one is out its a bulb
2000 GMC Sierra Pickup the brake lights don't work but the parking lights do What fuse controls the brake lights?
Check stop light fuse Check bulbs double filamented smaller for brake lights Check the operation of the stop light switch Check socket for corrosion
My brake lights on a 96 gmc sierra 1500 pickup just quit working along with the hazard lights but the running lights work fine What do you need to look for to fix it?
Check the fuse for the brake lights. It should be marked stop/haz on the fuse box cover.
How do you turn off the auto headlights on a 2005 GMC pickup?
slightly press your E brake on just enough to make the lights go off but not enogh to wear on the brake. this worked on my 97
Is there a fuse for trailer lights on 1995 gmc pickup?
Yes.
What can cause my taillights on a 1994 gmc 2500 pickup not to work even though the brake lights and turn signals work?
The tail light circuit is separate from the brake and signal light circuit. So, check the fuses, check the bulbs, check the sockets and if you haven't found the problem yet, check the wiring.
Don't have tell lights on GMC?
If you do not have working tail lights on your GMC vehicle it may be an issue with the wiring or your lights may be burned out.
How do 1996 gmc Yukon brake lights work?
The 1996 GMC Yukon brake lights work by receiving power from the brake light relay switch. The brake light relay switch is connected to the brake pedal.
