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.

NHTSA — Engine And Engine Cooling: Cooling System Problems Seal Of This Might Hurt


fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
20,000 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 Pontiac Bonneville cooling system problems

cooling system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2001 Pontiac Bonneville:

Unsubscribe any time. We don't sell/share your email.

2001 Pontiac Bonneville Owner Comments

problem #2

Feb 172003

Bonneville 6-cyl

  • Automatic transmission
  • 40,000 miles


The intake cover is made of plastic, antifreeze and plastic do not make a good combination. This has caused leaking in the intake and cost me over $600 for repairs. The thing is the mechanic knew the problem as soon as we raised the hood because he had seen it so many times in this model. I believe this to be a manufacturer problem and something needs to be done about it.

- Shelby, NC, USA

problem #1

Oct 102001

(reported on)


  • miles
Consumer believes that a cooling system leak has gone undetected since delivery of vehicle.

- Milwaukee, WI, USA

Not what you are looking for?