Question about 2003 Chevrolet Silverado 1500

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2003 silverado pick-up brake lights won't go out when motor isoff

After driving when it rains and get home my brake light won't go out when I shut the motor off {help}

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  • AIKENCOUNTY2 May 11, 2010

    rear OF the truck, sorry.

  • AIKENCOUNTY2 May 11, 2010

    the brake light on the dash or the lights on the rear or the truck?

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  • 341 Answers

Sounds like a bad brake light switch located under..... follow brake pedal up under dash ... you will see a switch with 2 wires .... unplug wires if lights go off bad switch... about a $7 part at autozone....hope this helps

Posted on Dec 11, 2008

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My 2003 chevy silverado has abs light on , parking brake on , service 4wd message , and cruise control won't work . What schould I look for ?


I would probably have the computer scanned for ABS trouble codes.
It could be a switch or something else such as an actual problem with the abs system.

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2003 chevrolet silverado 1500 4x4, my abs light first came on and nothing was wrong at first, but then later after driving maybe few weeks, service break light came on, and ever since the second light


Did you service the Brakes? The wheels have spin counters and if the Brake pads disentergrate they can block the sensors in some designs.

This is particularily true where rear brakes have drum/rotor combinations. The inner drum portion can hold debris.

Like you said, "None of this started until the service Brake light came on". So eliminate the service Brake light and maybe the trans will straighten out.

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Major electrical problem? No previous warning.


We had this same problem after my brother hooked up jumper cables backwards.
We had to replace computer boaord under the driver side dash. I can't for the life of me remember the name of it. lol But someone who can hooked that up and get the codes can tell you if it needs to be replaced. I found mine on ebay....they are Hard to find!

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Jun 26, 2012 | 2003 Ford ZX2

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2003 Chevy Silverado When I apply the brakes the


I had an issue like this one on a 2007 Colorado. I assume you mean the turn signal indicator inside the truck lights up. It was a bad bulb. think it was the turn signal bulb on the side that is lighting up. As for the gear indication being dim there is more than one bulb that lights them up and one may have blown. I hope this helps.

Jul 15, 2011 | 2003 Chevrolet Silverado 1500

1 Answer

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change the brake light switch this is your problem for the brake lights ,the speedo and the gearchange are different problem and i would suspect the speedo pick up sensor its on top of the diff output drive shaft passenger side .Providing that its normal wiring and not a CAN bus line because if it is then it could be a parallel resistor playing up which would knock out more that one thing but i have no product knowledge of this american vehicle .sorry

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Possible bad ignition switch. Check out video on YouTube called 2003 Trailblazer, no blower, abs and brake lights on. I know it says trailblazer, but it applies to most of gm full size trucks. 2003-2007 including Silverado. Video tells you how to test to see if that is the problem.

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Brake lights on a 2003 chevy silverado 2500HD wont work.


same bulb but 2 seperate elements. wiring diagram u should be able to obtain from your local auto parts store like autozone(preferred)

Sep 23, 2009 | 2003 Chevrolet Silverado 2500HD

1 Answer

Brake lights do not work


Have you checked both bulbs , also check closely on all the fuses. if you have to, use a test light and probe all fuses on both sides of the fuses

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1 Answer

Air Bag Light, Brake Light, & ABS Light came on in the dashboard.


Check and see if your alternator is charging
Low voltage will cause those lights to come on, as the computer is shutting down.

To check your alternator you will need a volt meter... WITH the engine running you should have about 14 volts coming out. IF NOT you need to replace the Alternator!

Apr 19, 2009 | 2003 Ford Windstar

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