DRE69L46

My brake lights (left, right, and center) sometimes stay on dimly when the car is turned off, and when driven again.

I have a 1996 LT-4. This has happened twice over the last few weeks of regular driving. The lights are on dimly - not normal brake light brightness. After this happens, applying the brake pedal doesn't make them go to normal brightness, and they don't go off - even when the car is restarted started and I'm driving. I disconnect the battery, and it's as if they 'reset', and I'm fine again. On the days it's happened, I drove a good distance, it was very hot, and I used max A/C.

Obviously it is a safety issue, as the brake lights aren't functioning properly.

The battery voltage is normal, and the battery load-tests fine. I don't think it's a brake pedal switch. Perhaps a relay sticking?

Any suggestions would be most appreciated.

Thanks, Doug

antfarmer2

Clean the sockets and grounds.

Cliff Harris

Do you have HID or LED headlights? If you do then you lose the ground through the headlight filaments.

kg4fku

No and No.

Here is the answer from the book.

GMP/96-Y-1, Book 1 of 2, page 8A-110-13

"Stop Lamps Stay "ON"

1. Disconnect brake switch connector
- Do stop lamps turn off

Yes -
A. Check for proper brake switch adjustment.

B. If OK, replace brake switch.

NO -
A. If rear stop lamps stay "ON", check for a shorted capacitor between terminals "A" and "B" or a short to B+ in CKT 17.

B. If OK, replace turn/hazard switch assembly

C. If high level stop lamp stays "ON", check for a shorted capacitor between terminals B and C or a short to B+ in CKT 20.