Question about 1996 GMC Jimmy

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Tail lights stay on.

Brake lights get brighter when pedal is pressed but tail lights stay on. Brake control for trailer stays on though.not sure what switch looks like.

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  • GMC Master
  • 586 Answers

Sounds like you have wires crossed, shorting together, or incorrectly connected, probably at the hitch connector. To verify this, you will need to open up the connector and check each wire individually, and to do this properly, you are going to need the wiring schematic for the brake control, the truck and the connector. Fixing this is usually beyond the scope of most DIYers, so my suggestion is take it to a hitch shop. If you want to try fixing it yourself, check other internet sites for instructions.

Posted on May 18, 2014

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Posted on Jan 02, 2017

  • 46 Answers

SOURCE: brake and/or taillights stay on

First, check the brake light switch, and if the high level light is on, the brake light switch is the likely problem. Even if it isn't, the bulbs could be burnt out. Anyway, disconnect the wire harness from the brake light switch on the brake pedal. If the lights go out, replace the switch. To test the light switch, disconnect the wire harness from that (with the switch in the "off" position). Again, if the lights go out, this is the problem. More likely, it is the brake one. This happened on my Dodge twice.

Posted on Dec 26, 2008

TLRogue
  • 99 Answers

SOURCE: brake lights dont work untill i turn the lights on, then stay on

Hi, are the tail lights and the brake lights in the same light unit?
If so, there is a possibility the bulbs are in the wrong way. If it is a stop/tail bulb then there are two locating pegs on the side of the metal part. If you look, one is higher than the other which has to locate into the correct slot in the holder.

Another possibility is the bulb is wrong, there are double and single contacts. Check the contact on the base of the bulb is the same as the contacts in the holder.

TL

Posted on Feb 09, 2009

Outofworkjoe
  • 216 Answers

SOURCE: I turn lights on the brake lights come on.

Replace you brake light switch.

Posted on Jun 23, 2009

  • 1 Answer

SOURCE: trailer brake controller problem

I found the problem. Talking with a technician from the controller company, we determined that it was a fuse problem. I found that the fuse to the CHMSL was blown.


Posted on Jun 30, 2009

  • 12 Answers

SOURCE: 99 gmc jimmy. no brake

Should be switch clear at top of brake peddle if I remember right it looks like a tube facing fire wall

Posted on Aug 05, 2010

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Why r my tail lights staying on my 1993 gmc Sierra


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1 Answer

Tail lights stay on


make sure it is not the brake lights on instead. press the brake pedal and have someone see if the lights gets brighter. if not so you need a new brake light switch. if they do get brighter the brake light switch is fine and the headlight switch is bad instead

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Tail lights stay on when car is off


Check this 1st.With the car running,turn on the headlights.If the taillight gets brighter,it's the brakelight that is staying on.Turn the headlights off to see if that then makes it less bright.If so.try lifting the brake pedal up.If the taillights go out,it is the brakelight sensor switch that is hooked up to the brake pedal.This is a small pushswitch,located at the top of the brake pedal in the inside of the car.It will have 2 wires connected to it.It either needs adjusting or is faulty.Hope this helps

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Tail lghts/brake lights


Isn't that mysterious? It took me a few weeks to figure it out. Look carefully under the break pedal. There is this device called a "break light switch". I hope that helps.

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