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.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

8.8

pretty bad
Typical Repair Cost:
$788.00
Average Mileage:
132,752 miles
Total Complaints:
10 complaints

Most Common Solutions:

  1. not sure (5 reports)
  2. replace intake manifold gasket (3 reports)
  3. new heating coil and radiator (1 reports)
  4. replaced water pump (1 reports)
1999 Pontiac Grand Am cooling system problems

cooling system problem

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1999 Pontiac Grand Am Owner Comments

problem #10

Jan 012010

Grand Am 3.4L

  • Automatic transmission
  • 150,000 miles

A D V E R T I S E M E N T S

i own two 1999 grand am 3.4. both of them are lose water causing overheating and one of them just wont drive after 20mins. (my wife's idles perfectly but when put in gear it wont go anywhere. like it not getting gas. put it back in park and it purrs like a kitten. let it cool of for a few hrs and it will drive for another 20min.) mine runs and drives perfectly but leaks water. i have to put water in it twice a week. ANYBODY KNOW ANYTHING PLEASE LIKE ME KNOW.

- , Douglas, GA, USA

problem #9

Jul 082010

Grand Am GT 3.0L

  • Automatic transmission
  • 110,000 miles

Have replaced everything there is to replace on the cooling system including: head gasket, intake gasket, overflow tank, radiator, water pump and still the coolant is coming back out of the overflow tank. I have to replace the coolant every 2 or 3 weeks.

- , Covington, KY, USA

problem #8

Oct 152008

Grand Am GT V6

  • Automatic transmission
  • 200,000 miles

I bought my car in 2008,I have had over heating problems ever since I've had the damn car,So sick of it love my car but sick of the overheating bullshit.It has had a new part after new part put on and still over heats.Will never buy another Pontiac.

- , Paris, TX, USA

problem #7

Aug 112008

Grand Am GT V6

  • Automatic transmission
  • 113,519 miles

A D V E R T I S E M E N T S

I have had this car for 9 yr. it has cost me so much money to fix throughout the years.But it is paid off, no car payment.For the past 3 yr. it keeps on over heating. 3-4 times a year I get it fixed,it runs good then a few months later same problem. You think some dealership out there could fix it right.my car is a real piece of s---,i just wish it would act right!

- , White Bear Lake, MN, USA

problem #6

Sep 302008

Grand Am SE V6

  • Automatic transmission
  • 153,000 miles

My car had been leaking antifreeze for a while, so my husband used 2 cans of stop leak to get it to stop. Then about a month ago, it started overheating (up to 260), and I had no heater. A friend of mine put a new 195 degree thermostat and a new water pump in it and it still overheated. It got so hot at one point it shut itself off. Let it sit for a week, never saw anything on the ground so I called repair shops. Everybody told me it was a cracked head $1,000-1,800 to fix. We were ready to sell the car!! We got ahold of another shop who told me to bring it in, they didn't think the head was cracked, because the car started and ran fine (just got hot). Found out yesterday that there was oil in the antifreeze and the problem was the intake manifold and I need a new radiator cap. They told me that they didn't see any engine damage, so we gave them the go ahead to fix it. I can't help but wonder what the next think to go wrong will be.....is that wrong?

- , Springfield, MO, USA

problem #5

Jan 012008

Grand Am SE 2.4L V6

  • Automatic transmission
  • 130,000 miles

Overheating problem has happened over 5 times, i love my car to death but im sick and tired of this problem

- , wichita, KS, USA

problem #4

Nov 032007

(reported on)

Grand Am SE V6

  • Automatic transmission
  • 99,000 miles

A D V E R T I S E M E N T S

Car is currently in the shop. I am now looking to buy a different car that is not a Pontiac. I have had so many problems with the car's coolant system. This is the 3rd time in 3 years that the problem occurred. Doesn't help that the shop has incompetent humans working on your car. They fixed the thermostat since it was "bad". Now something else is wrong. Brought to local mechanic this time. Last time it went to dealer. They seemed to know what was wrong immediately- probably since it has happened to everyone else! Should have just taken it there to ditch.

- , San Diego, CA, USA

problem #3

Jan 122007

(reported on)

Grand Am GT

  • Automatic transmission
  • 82,000 miles

I own a 1999 Grand Am GT and can I tell you that I will NEVER purchase another Pontiac in my lifetime. They look sporty and everything, but as a single mother... I have spent more money repairing it than it will cost to put my two children through college!!!!

I have had numerous repairs to complain about, however, the most significant is the intake manifold... I guess the part is made of plastic and keeps cracking...

I have had this repaired for the 3rd time. Let's hope it is the last... as I have heard GM is now using a steel part instead!!!!! The repairs were all within 1-1/2 years and my repairman always uses new parts.

- , Sylvania, OH, USA

problem #2

Apr 192006

(reported on)

Grand Am SE

  • 120,000 miles

My car overheated no matter what so I had to get a new heating coil and radiator and thermastat thingy! It cost a lot of money and once I got all those things replaced It overheated THE DAY I PICKED IT UP FROM THE DAMN SHOP! Boy was I pissed. My stepdad had to replace the thermastat he just put in there and it worked fine after that, hasnt overheated since. But I think he unhooked the heater because all last winter it didnt work and he said if I wanted that to work then the car would overheat! I HATE THIS CAR! I AM GOING TO DRIVE IT OFF A CLIFF!

- , Richmond, VA, USA

problem #1

Nov 272005

(reported on)

Grand Am SE

  • 170,000 miles

this sucks my car over heats because no water is going into the engine from the radiator even if there is coolant in the reservoir.

- , Hidalgo, TX, USA

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