Question about 1999 Pontiac Grand Am GT

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Where can i find the vacuum line diagram for a 99 grand am 3400 ?

Where can i find the vacuum line diagram for a 1999 pontiac grand am with the 3400 v6?

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Go to Autozone and buy a Hanes manual for the make and model of your car. It will have the diagram plus all other information about it. It will probably cost around 20 bucks.

Posted on May 11, 2014

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Posted on Jan 02, 2017

SOURCE: 1997 pontiac grand am

junk it

Posted on Sep 12, 2008

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SOURCE: where is the Mass Air Flow Sensor loccated?

Pull of the grey cover and right before the intake its a black thing about two inches wide with two screws and a wire harness

Posted on May 30, 2009

Molson02536
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SOURCE: I have Pontiac Grand AM 2001 2.4L I Need Vacuum

Lets keep it simple and start with replacing the gas cap first. Don't buy the cheap generic gas cap, buy the OEM dealer gas cap for your car. Your car is 8 years old and the seals in the gas cap get brittle and have cracks, Next time you fill up your gas tank, look at the gas cap and inspect the condition of the seals. Start with that and make sure that when you reinstall the gas cap that it's tight, you want to hear it click three times to insure that it's tight. Good luck and keep me posted, the service light will go off on it's own after the issue has been addressed after 3 start ups and will clear it self from the history after 100 start ups without any issues. Good luck and be glad to answer any questions you may have. 

Posted on Jul 21, 2009

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SOURCE: replace the torsion bar on my 99 Pontiac Grand Am

they do not use torsion bars on those cars.it is probably the sway bar you're talking about.if it's the front one they are pretty tough to change.you need to lower the front sub-frame to replace the sway bar.

Posted on Jul 30, 2009

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SOURCE: 99 pontiac grand prix 3.8 l.No battery power to pcm

Pin 20 on the blue pcm connector is the power wire to the pcm it is an orange wire. (hot at all times). The power to the data link connection is the cig fuse in the i/p fuse box.

What is the exact problem you are having?

Posted on Aug 04, 2009

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2 Answers

2000 pontiac grand am 3400 wheres the pcm located


Check the next diagram (click HERE for image zoom)...

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Fig. Powertrain control module (3) inside air cleaner housing in left side of engine compartment, showing the C2 connector (1), C1 connector (2), air cleaner housing (4), wiring harness (5), and forward lamp ground (6) (zoom in THIS LINK)

Hope this helps (remember to rating and leave some testimonila comment about this free answer).

Oct 11, 2011 | 2000 Pontiac Grand Am GT

1 Answer

Belt routing diagram 1999 pontiac grand an gt v6


i belive this is the same as a 96 ? which has an auto tensioner towards bottom of engine towards rear of engine

Jul 16, 2010 | 1999 Pontiac Grand Am GT

3 Answers

2000 Grand Am GT: I need the firing order diagram for a 2000 pontiac...


2000 Pontiac Grand AM 3.4 liter V-6 VIN "E"

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Hope helps (remember rated this).

May 17, 2010 | 2000 Pontiac Grand Am GT

2 Answers

1999 Grand Am 3400 V6 misfire. replaced plugs, wires, injectors,coils Pull heads to check valves, good compression misfire at idle and goes away above 2000 rpm any help or ideas appreciated


check crankshaft and camshaft sensors. If faulty they may cause misfires, poor fuel mileage, stalls, hard starts. Make sure the ignition coil is ok, including its powers circuit. hopefully this helps!!

Apr 09, 2010 | 2000 Pontiac Grand Am GT

1 Answer

1999 grand am gt 3400 v6


If white smoke is coming out of your tail pipe is is burning antifreeze. However have it checked closely. While it could be a head gasket, the 3400 is noted for the intake gasket leaking. Have a pressure test done before you pay for something that you don't need.

Also there is a way to permanently repair the head gasket if it is a real leak as long as it still runs. Check out Barr's Leak head gasket repair and follow the directions to the letter. do not skip any thing. It works I have repair a dozen cars with this.

Hope this helps

Oct 01, 2009 | 1999 Pontiac Grand Am GT

1 Answer

2000 pontiac grand am 3400 sfi starts but tacks out to 7k.


the rev limiter is kicking in.without it in gear thats what it does.check that you have the throttle hooked up correct.an open vacuum will make it idle at 1400 or so not 7000

Jun 13, 2009 | 1999 Pontiac Grand Am GT

1 Answer

Just would like to know where the heater fan motor is located .


its on the passenger side under the hood on the firwall. its the only motor over there i think 3 screws hold it in place and its not hard to change out

Jan 17, 2009 | 1999 Pontiac Grand Am GT

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