Question about 2000 Pontiac Grand Prix

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2000 Grandpa Prix brake lights work - but the tail lights do

That sums it up. It happened once before. Some mechanic had to track back all the wiring and it got really expensive. Any idea's on how I could do it myself? Or maybe a trick!
Thanks

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  • crystalpizza May 07, 2009

    Thank you!!! I will go take a look right now!

  • crystalpizza May 07, 2009

    Where would the ground wire typically be located? I'd rather not rip the car apart if not called for.

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The most common and simplest thing that can go wrong is the loss of the common ground to the lights. Look for a wire that goes from the lights to the steel body of the car. See if it's disconnected. Another check is to take a wire and hold it to a bare area of steel and then to the light base, not the red power wire. By the way ground wires are almost always black. The other thing to do is check the fuse in the main fuse box to see if it's burnt if so change it out with the same amperage.

Posted on May 07, 2009

  • Manuel Rebelo May 07, 2009

    You should find it in ether corner of the trunk in the location of the lights. You should be able to just pull the liner away, gently, to gain access.

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Flashers don't work in a 2000 Pontiac Grand Prix. Don't have a book or wiring diagram to backtrace source of the possible problem.


Howdy anonymous,

Beyond the always FIRST STEP of blaming the "FLASHER"....
(see rockauto example $ below)

There immediately follows moving on out to the light bulbs and checking they (EACH & EVERY) work...

Then & only then do you start "BACK-TRACING"

I always recommend getting REAL FACTORY support documents but luckily BBB Industries has FREE documents for popular USA models: and TECHNICAL SERVICE BULLETINS...
(foreign & domestic... (registration required... real documents))

Go to the wiring SCHEMATIC... You will find REFERENCES to both BATTERY & GROUND...

It would be really helpful to know... WORKING STATUS?

Tail lights
Brake lights
Left signal
Right signal...

If Tail lights and Brake lights work... you can
pretty much forget about BACK-TRACING altogether...

Start with your FLASHER power source and move
immediately into the "multi-contact flasher switch

Cost... Rockauto
http://www.rockauto.com/en/catalog/pontiac,2000,grand+prix,3.8l+v6,1359345,electrical,flasher,10139

Details
More Information for ACDELCO E1958E

FREE wiring & TSBs
BBB Industries Premium Alternators Starters Power Steering Products

Hope this helps

Toner Tracer... (BACK-TRACER: not a novice tool)
Extech TG20 Wire Tracer and Tone Generator Amazon com

Carnac the Magnificent

Jul 07, 2017 | Pontiac Cars & Trucks

1 Answer

Head lights dont work


Sounds like you have a wireing issue. Could of arcked on something or came loose. Track the wires down and follow them you should find the bad wire.

Mar 22, 2013 | 2000 Buick LeSabre

1 Answer

Sent an email earlier before I finished the situation. 2000 Pontiac Grand Prix GT. Brake lights will not work. I have replaced all bulbs, running lights work, third brake light in window works, turn...


has to be somwhere in the wiring for the tail lamp brk light. if the high mount works the switch is good. did you put the correct bulbs in? they may share a common ground independant of the other lights.

Nov 19, 2010 | 2000 Pontiac Grand Prix

2 Answers

Tail lights and dash lights out


Check the head light switch and the ground of the fuses.

Oct 08, 2009 | 1995 Pontiac Grand Am

2 Answers

2000 Grand Prix Brake light issue


YES THE PROBLEM ON THESE IS THE MULIFUNCTION SWITCH, ALSO KNOWN AS THE TURN SIGNAL SWITCH. THE SYMPTOM FOR THIS SWITCH BEING BAD IS THE ONE U HAVE ACCORDING TO A SERVICE BULLETIN. PART # ACDELCO D6280A d974e9a.jpg

May 08, 2009 | 2000 Pontiac Grand Prix

2 Answers

2000 Grandpa Prix Brake light issue


yes they are the same bulbs,sounds like the brake light switch,located where the brake pedal is is not working

May 07, 2009 | 2000 Pontiac Grand Prix

1 Answer

Rear tail lights won't go on in 1994 pontiac grand prix


rec replace brake switch high mount brake light would still work due to seprate cicuit.if no pulse coming out of white wire then replace if pulse check wiring to repair or run new wire. to brake lights.

Jan 02, 2009 | 1994 Pontiac Grand Prix

2 Answers

2000 Mazda 626 brake lights


try brake light switch on top of brake peddle

Sep 13, 2008 | 2000 Mazda 626

2 Answers

2001 Grand Prix GT


I have the same problem and it is the switch... I ran a wire from my back window light to my brake lights and it works great. saved 600.00 bucks and only took 20 min Danny

Sep 11, 2008 | 2002 Pontiac Grand Prix

2 Answers

Brake lights quit working


Tail lights acting insane?

We had the same issue with our 2000 Pontiac Montana. Brake lights, turn signal lights, running lights, back-up lights and emergency flasher didn’t work at all or operated at random. The cause: poorly designed aluminum contacts on the tail light circuit board and wiring harness connector arced over and disintegrated with normal use.

Pull the tail lamp assembly, remove the electrical connector and look for burned contacts on the connector plug and the connector socket (they call this long plastic piece with the socket the circuit board: it includes the four bulb sockets. Replace the circuit board and the wiring connector.

You can DIY this job with basic auto mechanical/electrical skills and tools. The two circuit boards and the two connectors set me back $230 (2009 cost) for new parts. The electrical contacts on the factory replacement parts are improved.

I needed a T-30 torx driver to remove the tail light assembly (you need this to change out bulbs, too), wire cutters, wire strippers, electrical tape and an electrical lug crimper to do the job.

Aug 02, 2008 | 2003 Pontiac Montana

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