Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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Coolant Leaking Seal Of Avoid Like The Plague


pretty bad
Typical Repair Cost:
Average Mileage:
78,010 miles
Total Complaints:
6 complaints

Most Common Solutions:

  1. not sure (3 reports)
  2. leaking coolant out of exhaust needs head gaskets (2 reports)
  3. replace coolant tank, hoses (1 reports)
2003 Pontiac Grand Am cooling system problems

cooling system problem

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2003 Pontiac Grand Am Owner Comments

problem #6

Oct 112015

Grand Am GT1 3.4L V6

  • Automatic transmission
  • 141,673 miles


Had many problems with my Grand Am. Special Edition 30th Anniversary and still had gasket problem coolant problems, transmission problems but the coolant problems just kept coming back. Worst car I have ever seen. Not reliable at all. I'm having this car repaired at least once a month. Had to change transmission and now I'm having false check engine lights come on due to a faulty computer.

- , Montreal, QC, Canada

problem #5

Oct 172009

Grand Am SE V6

  • Automatic transmission
  • 102,000 miles

I have read everyone else's issue and I am HOT! First got my car in 2004 it had 17000 miles on it. It drove great for nearly 2 years until one day it ran hot. It was the manifold gasket which costed me 1200 to get repaired. Then a year later the fuel pump went out another 1200. The the fuel injectors needed replacing because clearly super unleaded is cheap gas but injector cleaner and octane boost fixed it after the dealership planned to charge me close to 2000. No all of my antifreeze runs out of the stupid overflow container because it has that hose that relieves the coolant on to the ground. I refill it and get another 2 weeks. I get my oiled changed every 2 months.

this car is a load of crap looks good great sound system but who is listening to the radio when your car is making all kinds of noises (like the knocking sound I heard today) I still owe on this car but when it gets paid for it will be quickly sold or traded worst investment ever. File your complaints at so we can get this recalled or do a class action lawsuit. They need to bailout their customers now.

- , Ooltewah, TN, USA

problem #4

May 012006

Grand Am SE 3.4L

  • Automatic transmission
  • 40,389 miles

i bought my grand am in 03, it was a lease back with 30 000 Km, had warranty to 60K..... I had to keep going into to the GM dealership to ask why i was leaking coolant...they re-assured me that everything was OK. I took the car into my family mechanic and he told me my dead gasket was about to go and grand ams were notorious for the problem. He told me exactly what to say to the dealer and I ended up getting it replaced for free.... Now at 140 000K's (i perform regular maintenance) my car was mis firing, had to replace the plugs, wires, and the fuel going threw my exhaust screwed my cat converter... I was quoted $409 for the part and $109 for labor, and a buddy of mine can get me a new cat for around $160 with no labor... BEWARE a great car when it's in good working condition, but the problems that arise are a pain in the ass....... WILL NEVER BUY ANOTHER GM

- , Okotoks, AB, Canada

problem #3

Jan 282005

Grand Am GT 3.4L

  • Automatic transmission
  • 30,000 miles


Damn cooling problems; muddy sh*t in the water reservoir. It's losing lots of coolant and it was found to be leaking out of the exhaust pipes. I bought this car brand new in 2003 . What a piece of sh*t! I will never own another GM product. There needs to be a class action suit against GM, not Dex-Cool.

- , Tampa, FL, USA

problem #2

Jan 222009

Grand Am 3.4L

  • Automatic transmission
  • 78,000 miles

My problem sounds like the same as everyone else's problem with the intake manifold gasket. Seems to be leaking from the right side of the engine and puddles into a small cavity on top of the transmission. The coolant level has to be refilled about once every three weeks and beginning to notice I have to refill it more frequently. Have noticed recently that the engine oil needs to be topped off before the engine oil change of every 3,000 miles, which there isn't any noticeable leaks but has started to happen about the same time. Hopefully the engine coolant has not started to leak inside the engine. This seems to be a typical problem and I can't believe GM hasn't done a recall on these defective gaskets. I guess I will be joining the club of high price repairs. Very disappointed since I always buy GM products!

- , Boynton Beach, FL, USA

problem #1

Oct 012008

Grand Am SVT 3.4L V6

  • Automatic transmission
  • 76,000 miles

I'm having to add coolant to my 2003 Grand Am 3.4L V6 SVT every 1-2 weeks now and it is slowly getting worse. I have had to add coolant ever since I owned this car. I used to have to add it every month or so but now it is much more frequent. I am debating whether or not to fix it but now I am getting leaking externally (assuming water pump). Pontiacs are JUNK! Never buy another Pontiac so this crap company goes out of business. Buy a Toyota or Honda, IMHO. Peace! God Bless!

- , East Tawas, MI, USA

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