Question about 1996 GMC Jimmy
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.
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
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
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.
Posted on Feb 09, 2009
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
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