The rear light socket plate may fail causing a brake light or other rear light to stop working.Google+
Car Problem Reports
Oldsmobile Silhouette Rear Lights May Not Work Due to Rear Light Socket Plate Failure
Oldsmobile Silhouette Problem
Average Mileage: 129,053 mi (77,000 mi - 240,000 mi)
Visitor, 2000 Oldsmobile Silhouette, 152,000 mi
both blinker lights stayed on inside car.when this happened, blinker lights in back worked erratically, then brake lights stopped working then all lights in back stopped working. Also caused "problem" lights to intermittently go on and off. Replaced the back light circuit board and the pigtail and now are fine. problem was where the circuit board and pigtail connected.Did not make good contact.
Visitor, 2001 Oldsmobile Silhouette
Rear brake lights quit working
Visitor, 2003 Oldsmobile Silhouette, 77,000 mi
I replaced the rear brake light bulb but it didn't fix the problem.
Visitor, 1998 Oldsmobile Silhouette, 240,000 mi
Rear light's goviut from time to time more often when cold and wet. pull bulbs and out rught back in for temporary fix van stated running hot so replaced thermostat then thought it had been faulty so I replaced it again found out our was the intake gasket had went bad and really wanted to do the heat gasket as well but I was afraid the heads could have been warped so didn't do the head gasket. I would suggest if you can replace the heads of there bad then do all at once because of you are doing the intake gasket it's 8 or ten more bolts to go the test of the way I just happens to be out of state and doesn't $1,500 on tools parts and hotel. I had to take the chance that the head gasket wasn't blown and stop there because of the heads had been warped I want site I could get em and really didn't have the money to spend anyway and new Super careful because the upper plentum is aluminum and almost 300 bucks new because I brike mine because a faulty tork wrench. Job sucks any wsy you look at it so be prepared and good kuck
Visitor, 2003 Oldsmobile Silhouette, 110,029 mi
Replaced bulbs but still don't work.
Visitor, 1998 Oldsmobile Silhouette, 167,000 mi
Brake lights were not working. Went to my mechanic, and he determined that the Rear Light Socket Plate failed, and would have to be replaced; which I had him do.
Visitor, 2003 Oldsmobile Silhouette, 90,000 mi
rear tail light keeps burning out. it has not been fixed
Visitor, 2002 Oldsmobile Silhouette, 85,000 mi
Rear right side brake light would not work,even with new bulb. Problem was a faulty connection, entire socket plate had to be replaced.