Brake lights coming on when truck is off..replaced switch and everything seemed to be working properly until last night when the lights were on again. anyone have any other suggestions????

 

Is you pedal loose? mine did that and I pulled up on the pedal, the lights shut off. Oddly the last time it happened to me I was at the Donner Pass rest stop on my way to Reno.

 

no pedal seems normal and not loose at all

 

Chinese switch from the auto parts is bad already?
Try an OEM

 

Did you follow this procedure?
1. Depress and hold the brake pedal in the depressed position.
2. Align the tabs on the brake lamp switch locking collar with the keyed hole in the switch mounting bracket on the lower steering column (1).
3. Insert the tabs on the brake lamp switch locking collar through the keyed hole in the switch mounting bracket until the switch housing (2) is firmly seated against the bracket.
4. Rotate the switch housing counterclockwise about 30 degrees to engage the tabs on the locking collar with the switch mounting bracket.

CAUTION: Release, but do not pull up on the brake pedal before the switch plunger adjustment has been completed.


5. Release the brake pedal, but do not pull it upward.
6. Rotate the plunger adjustment release lever (4) clockwise until it locks into place. The lever should be parallel to the brake lamp switch connector receptacle. This action will set the switch plunger length to a final adjustment position and cannot be undone. If not performed properly the first time, a new brake lamp switch must be installed.
7. Reconnect the wire harness connector (3) to the brake lamp switch.
8. Reconnect the battery negative cable.

 

That sounds about right. If you need to get another switch, try this- drill the mount holes out a little on the switch, giving some adjustment. install switch, push forward until lights go off, then tighten down. Did this to mine, and it has behaved ever since. You've got nothing to lose.

 

You might be right with that post.

 

Just as food for thought my 97 starting doing that and it was a short in my brake controller...I don't recall if yours is wired the same but is something to take a look at.