i have a 2004 cadillac cts none of the break lights will work i replaced the the switch under the gas pedal,checked all the fuses and bulbs and still wont work ... please help

Asked by Apr 01, 2013 at 04:39 PM about the 2004 Cadillac CTS RWD

Question type: Maintenance & Repair

9 Answers

lotta scrub up clean up business here, recommend some latex gloves a breathing mask and safety googles if you're gonna do this....a trip to the hardware store first should be on your roster~

1 of 1 people found this helpful.

It's not healthy to breathe acid fumes, but think of all the surrounding metal that has to corrode to the beat~~24 hours a day, nonstop...a nine year old battery isn't going to accept charge very well, and within a couple of years...not at all, so if you plan to get five more years out of your caddy, would buy a brand named guaranteed, pro-rate-able return policy such as interstate provides~


if your battery was no good there would be more wrong than just the stop lamps not working. check and see if your getting power to the connectors at the tail lights

anything can happen in a "brownout" condition where voltages and amperages vary galvonically~

my compass points to NINE years old, if it's an OEM battery, gotta be gnarly looking with puffy blue afros of corrosion~


the starting system requires alot of amps if the battery was corroded up you would think it would have trouble starting.

1 of 1 people found this helpful.

Try switching on your turn signals. Do they work? If so you know power can get back there. Then switch on your 4- way hazards. Same deal. Next check for power at the brake light switch. If you have power going to and leaving the brake light switch it could be a problem with the turn signal switch. Usually power for the brake lights must pass through the turn signal switch. Even if you're not using the turn signals. HTH. -Jim

1 of 1 people found this helpful.

you don't want to clean the battery with a hose if it's located in the back seat...doooaf~


In an article I found that fixed my 2004 Cadillac CTS with no brake lights. Cadillac will not tell you, but this is a common problem that is part of a service bulletin that requires reprogramming of the Body Control Module due to computer ground fault of the brake lights. It's about one hour of labor with the cost of both brake light bulb replacement (that's $100 + tax). Find the article in Google Plus - CTS Cadillac Brake Light Not Working - 3rd Brake Light OK."

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