Troubleshooting a 2007 Pontiac Grand Prix

Asked by Dec 12, 2011 at 11:10 PM about the 2007 Pontiac Grand Prix Base

Question type: Maintenance & Repair

I have a 2007 Pontiac Grand Prix with an oily/water mixture dripping from my exhaust pipe. My car goes to about a 1/2 quart low on oil approximately once/month but I dont have any obvious oil leaks or burning oil. I have heard alot of swishing noises in the floorboard over the years, too, and a little bit of steam (not smoke) coming from the tailpipe (even in the summer) Not sure if any of these things are related, but thought they were all worth mentioning in case there is a connection. What could be wrong?

11 Answers

Blown head gasket on exhaust side,that is what the oily-water is.

1 out of 1 people think this is helpful.

Thanks. Could I have a blown head gasket and not know it? Car is running fine, completely normal. Driving it regularly. No signs of a major problem. Are you saying this is a good indication of worse things to come? Thanks for your response.

sorry to say ,but yes.its a small leak in it now,it will get bigger and worse.blown on exhaust side wont let collent get into the a glutton for punishment also,got a 00 GAGT.

1 out of 1 people think this is helpful.

Ok. What is the approximate cost for this type of repair? Ballpark figure. Is this something that does more damage/costs more to repair, the longer I wait?

cost depenonds on who does the job,usually around $600.00,yes the longer you wait the worse it gets,sounds like it was count in time,probley no this time.thing is it has aluiminum heads,they will have to be reserviced and pressure checked for cracks,that is part of the cost,

1 out of 1 people think this is helpful.

Thanks so much!! I appreciate your time and knowledge.


What does the overflow bottle for the cooling system look like,does IT look oily.Normally if a head gasket is blown you would experience loss of coolant or overheating at some time.The way the engines are made to get oil in the exhuast it would be almost impossible for it to come from a blown head gasket,from my experience it would more likely be a crack in one or more of the heads. Just to give you a bit of back ground,I have been a licensed mechanic in Canada for 50years


probably a blown head gasket

Thanks for sharing your knowledge. It's good to have a general idea of the problem early on. Im going to take it to our trusted mechanic and hopefully get it fixed before it gets any worse.


lots of times there's some little water coming from my tail pipe. If the place where you live is wet or diffrent climate change could cause this.. Like previous comments ( check water in the oil) that will tell you if you have a blown headgasket. Or lost of power....Have you ever ran hot?? If you have, check headgasket. I also have a gp2008 and the light 5-40 oil i lose about a quart between oil changes... Its the light oil.. I went to a little heavier wieght oil , and have no problems now.. hope that helps


head gasket is suspect aluminum head get a new head don' t use the orig

Your Answer

Add photo

Related Questions

  • 2007 grand Prix tranny

    Does anyone know if a 2004 grand Prix gt transmission comparable in 2007 grand Prix base both are v6 3.8

    2007 Pontiac Grand Prix Base


    Maintenance & Repair

  • how do i get my drivers side window up on my 2007 pontiac grand prix gt 1 answer

    my window went down fine,but now it will not go up. All my other windows work all though the passenger side goes up very slow. It is a 2007 pontiac grand prix

    2007 Pontiac Grand Prix


    Maintenance & Repair

  • 2007 grand prix 1 answer

    My headlights on my 2007 grand prix shut off while I was driving and wouldn't come back on. My brights still worked. I just got a paper from dealer about a recall. It was the headlamp driver module...

    2007 Pontiac Grand Prix


    Maintenance & Repair

  • 2007 Pontiac Grand Prix headlights, turn signal, and brights! 2 answers

    When I use my turn signal on My Pontiac Grand Prix, and it flips back after I turn, my brights flash on. It seems like it slips back too far or something. Also, now my headlights will randomly shut of...

    2007 Pontiac Grand Prix Base


    Maintenance & Repair

  • I have a 2007 pontiac Grand Prix with fuel gauge problems 1 answer

    I have a 2007 pontiac Grand Prix the fuel gauge goes to full when it's on empty

    2007 Pontiac Grand Prix Base



Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,766 nationwide Grand Prix listings starting at $1,995.


Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Reputation 3,770
#2 Tom Demyan
Tom Demyan
Reputation 2,510
#3 munron
Reputation 2,010
View All

Related Models For Sale

Used Chevrolet Impala
950 Great Deals out of 36,331 listings starting at $884
Used Pontiac G8
19 Great Deals out of 405 listings starting at $5,000
Used Dodge Charger
566 Great Deals out of 28,735 listings starting at $2,275
Used Pontiac G6
141 Great Deals out of 4,930 listings starting at $999
Used Chevrolet Monte Carlo
19 Great Deals out of 1,738 listings starting at $1,695
Used Pontiac Grand Am
1,717 listings starting at $1,995
Used Chevrolet Malibu
1,162 Great Deals out of 78,645 listings starting at $2,495
Used Pontiac GTO
3 Great Deals out of 495 listings starting at $5,900
Used Chrysler 300
526 Great Deals out of 20,640 listings starting at $1,500
Used Ford Mustang
689 Great Deals out of 38,143 listings starting at $1,750
Used Nissan Maxima
409 Great Deals out of 25,130 listings starting at $1,500
Used Jeep Grand Cherokee
1,112 Great Deals out of 69,509 listings starting at $1,500
Used Dodge Challenger
433 Great Deals out of 25,092 listings starting at $7,980

Used Cars For Sale

2008 Pontiac Grand Prix Base For Sale
12 Great Deals out of 416 listings starting at $1,995