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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NHTSA — Engine And Engine Cooling: Exhaust System: Manifold/Header/Muffler/Tail Pipe Problems Seal Of This Might Hurt


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
39,796 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2001 Oldsmobile Alero exhaust system problems

exhaust system problem

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2001 Oldsmobile Alero Owner Comments

problem #9

Jun 152006

Alero 6-cyl

  • Automatic transmission
  • 45,167 miles


: the contact stated coolant is leaking out at the intake manifold gasket causing the engine to overheat. The dealership determined the intake manifold gasket needed to be replaced. The manufacturer has been alerted.

- Fairfield, OH, USA

problem #8

Apr 082005

Alero 6-cyl

  • Automatic transmission
  • 46,000 miles
Defective intake manifold gasket discovered on 4/8/05. Coolant leak to the outside of vehicle.

- Summerfield, FL, USA

problem #7

Mar 042005

Alero 6-cyl

  • Automatic transmission
  • 45,000 miles
Lower intake gasket leaking coolant. Found during routine maintenance.

- Goodlettsville, TN, USA

problem #6

Jan 252005

Alero 6-cyl

  • Automatic transmission
  • 105,000 miles


The coolant in my Alero started leaking and there was no heat in the interior. It was determined that my intake manifold gasket was deteriorated. The part was replaced and was not kept.

- Columbus, OH, USA

problem #5

Dec 302004

Alero 6-cyl

  • Automatic transmission
  • miles
While driving consumer turned on the heat and the defogger, and both failed to come on properly. Consumer smelled an odor coming from the vents. Consumer drove vehicle to the dealer, and mechanic determined that the intake manifold was leaking and needed to be replaced....

- Oakdale, NY, USA

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problem #4

Apr 172004

Alero 4-cyl

  • Manual transmission
  • 76,000 miles
I have had to replace 4 engines 2.4L on my 2001 Oldsmobile Alero. My last engine lasted 32 days after I spent 1200$ and now I need to have work done to it again.

- Kentwood, MI, USA

problem #3

Mar 092004

Alero 6-cyl

  • Automatic transmission
  • miles


I purchased a used 2001 Oldsmobile Alero in December 2003 with 41,805 miles. After having the car for only two months I noticed a puddle of coolant under the car, I took it back to the dealer I purchased it from where I was told that it was leaking from the intake manifold and that my warranty would not cover it due to it being a gasket. I also was informed that my water pump was leaking. I learned through research that this is a very common problem with GM vehicles so I contacted GM and was told that I had to take it to a GM dealer to have it diagnosed (I purchased it from a Honda dealer and GM wouldn't take their diagnosis) to see if GM would assist in the repair. I took the car to a GM dealer and they confirmed the problem was the leaking intake manifold gasket and was told that GM would not be of any assistance with the cost of the repair. I was also informed that I would owe the GM dealer $30 for the diagnostic test (which GM also declined to cover) to find the problem; I was never told up front that they would charge me for the test and basically the test was not required since I (and GM) already knew what the problem was and was told by them to take it to a GM dealer for consideration for assistance. I have read hundreds (if not thousands) of complaints against GM for the same problem and also internal service bulletins from GM indicating that they were well aware of the problem with the intake manifold gasket. This is a very costly repair (between $800 and $900 dollars) for only owning the car for two months.

- Pittsburgh, PA, USA

problem #2

Feb 252004

Alero 6-cyl

  • Automatic transmission
  • miles
A defect on a 2001 Oldsmobile Alero. No safety defect listed.

- Cherry Hill, NJ, USA

problem #1

Dec 092003

Alero 6-cyl

  • Automatic transmission
  • 41,000 miles
Failure of intake manifold resulted in coolant leaking into the engine after only 40,000 miles, I am finding this is a common problem often resulting in engine failure.

- Manchester, NH, USA

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