How do you change a Turn Signal switch in a 1997 Chevy Lumina

I can almost 100% guaranty the turn signal switch is the problem. Power for the brake lights starts at the brake switch. power then splits from there and the third brake light gets power directly from the brake switch. Since the turn signal and the brake lights are on the same bulb power for the brake lights is routed through the turn signal switch. the switch depending on what position it is in will allow brake power or turn signal power to there respective left or right brake/turn bulbs.

If you hold your foot on the brake pedal and wiggle the turn signal and or play with the hazard switch the brake lights will almost always intermittently start to work. this will confirm a bad turn signal switch which is pretty common on GM vehicle with this style setup.

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Check the fuses..If ok ,,then most likely the signal switch..Your brake light circuit runs through the signal switch as well..Get someone to watch your brake lights to see if they come on..Now push the brake down and move your signal switch around and see if the brake light comes on intermittently..If so its definetly your switch

here is howw it goes, the power from the fuse goes to the brake switch then to the signal light switch and from there to the rear lights, test for signal from the brake switch to the turn signal, if good the signal switch is bad

YEP TO FIX BRAKE LIGHTS YOU HAVE TO REPLACE TURN SIGNAL SWITCH BECAUSE MY 98 LUMINA DID THE SAME THING.YOUR BRAKE LIGHT SWITCH AND TURN SIGNAL SWITCH SHARE THE SAME ELECTRICAL CIRCUIT.

All you need is a new brake light switch which is mounted by the brake pedal

1. Check the fuse make sure it is not busted and also use a designated amp only.
2. Check the bulb and the wires also.
   

why not just replace the turn signal switch must faster and safer . buy one from your local parts house then you can see its not that easy to install but you can do it with a little help

Had the same issue in the spring. Replace the turn signal switch. A general weakness in the switch in these years. Replacement solved the problem in my 97 Lumina.

This is a classic example of turn signal switch failure. On GM vehicles with a multi-function turn signal switch and combination stop/turn/tail lights (all rear lights are behind red colored lenses except for back-up lights) The brake light power is routed through the turn signal switch. This makes it possible for the right rear light to function as a stop light while the left rear turn signal flashes, and vice-versa. When the contacts fail to remain constant the brake lights, and turn signals can become intermittent. The proof that the brake light switch is functioning correctly is that the high center (cyclops) brake light functions properly. Wiring integrity is verified if you can prove that turn signals operate, but that can still be intermittent with this complaint, BUT if you use your hazard switch to turn on all the signals at once, you can verify wiring integrity. This is because the turn signal, and the brake light use the same circuit, and bulb filament in the rear lighting assembly. If any Hazard lights fail to function, check bulbs first, then retest. If all Hazrd light flash correctly and reliably, bulbs, sockets, and wiring have proven integrity, and the turn signal switch is the remaining component in the system which needs to be tested. Unfortunately, this switch requires disassembly of the steering column for service, testing or replacement. If you have never disassembled, and successfully reassembled a GM tilt steering column, I would reccommend professional assistance.

i would check the bulbs first. then continue to the brake switch