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.

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really awful
Typical Repair Cost:
Average Mileage:
55,126 miles
Total Complaints:
4 complaints

Most Common Solutions:

  1. not sure (2 reports)
  2. replace intake gaskets (2 reports)
2003 Chevrolet Monte Carlo cooling system problems

cooling system problem

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2003 Chevrolet Monte Carlo Owner Comments

problem #4

Aug 012007

Monte Carlo LS 3.4L

  • Automatic transmission
  • 60,000 miles


Needless to say I had to replace the gasket twice. GM finally came out with a differant gasket to fix the problem. The problem was the Dexcool antifreeze was eating through the gaskets. The created a new gasket and created a new antifreeze that you can use in any vehicle. There was a class action lawsuit against GM. We all had to produce reciepts for the repairs which I had. Low and behold everyone got screwed out of their money when GM went bankrupt. This also happened on my 97 GrandAm.

- , Lansing, MI, USA

problem #3

Nov 202008

Monte Carlo SS 3.8L V6

  • Automatic transmission
  • 52,096 miles

Well it appears that the verdict is in! GM and Chevrolet have a serious problem with their Monte Carlo and Malibu models! Across the board, right at 50k miles the intake manifold gasket is set to blow. I guess that is why their warranty is only 3yrs/36k miles. Its no wonder why they are no longer competitive in the auto industry. When compared to the 10yr/100k mile warranties out there, their 3/36 warranty speaks volumes about the reliability of their cars. Lesson learned!

- , Fremont, CA, USA

problem #2

Feb 042008

Monte Carlo 3.4L

  • Automatic transmission
  • 50,000 miles

starts out my oil is gone- take it in -my intake gasket is shot- 3 months later my air compressor is shot and engine is still leaking oil- $3,000 into it so far- I tried to trade the piece of c in but my credit is shot now- I hate chevy they are the worst never again --- 50,000 miles it should be running like a charm- lol -not a john deer 5 horse piece of garbage

- , Henderson, NV, USA

problem #1

May 012008

Monte Carlo LS 3.4L

  • Automatic transmission
  • 58,409 miles

Please let this be a lesson to everyone thinking General Motors has fixed their problems...they haven't. I recently had the intake gasket repaired on my 2002 Olds Alero...under Warranty. They told me my 2003 Monte Carlo would not have the same problem as they fixed it threaded bolts blah..blah..blah! Guess what? It went and out of Warranty. Guess again.....i traded it in, now thay can have their Chevy junk back and I will never never never buy G.M. again. I bought a brand new 2008 Honda Accord and hope to never see the repair guys like i got to know them at the G.M. Dealership. Now to get rid of the Alero and G.M. forever.

- , Sydney, Nova Scotia, Canada

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