Pontiac Leaking Coolant, Intake Manifold Gasket Failure

A cracked intake manifold gasket is allowing coolant to leak in many Pontiac engines. But is DexCool to blame?

A federal judge denied national class action status to the U.S. lawsuit, saying the process would be too complicated. Although the ruling can be appealed, it’s a huge setback.

DexCool Coolant and the Intake Manifold Gasket

Leaking coolant from a cracked intake manifold gasket is an extremely common problem on most GM vehicles made from the late 90s to the mid-2000s. Most experts agree that the problem stems from GM’s “DexCool” coolant, which reacts with the intake manifold gasket, causing it to leak coolant.

Replacing the intake manifold gasket usually costs between $700 - $1,000, mostly labor. GM has updated the material used in the intake manifold gasket so that it doesn’t react with the Dexcool coolant as fast as the original gasket material.

Currently there is no recall for the intake gasket, because it is not a safety issue (according to the NHTSA).

Several class action lawsuits have been filed, both in the U.S. & Canada. However even statewide class action lawsuits have been running into trouble. State courts in Michigan and California already have rejected class action status for Dex-Cool lawsuits. See the links below for more information.

GM Vehicles Most Affected

Make Model Generation Years
Chevrolet Malibu 5th generation 1999, 2000, 2001, 2002, 2003
Pontiac Grand Am 5th generation 1999, 2000, 2001, 2002, 2003, 2004, 2005

Dex-Cool Class Action Law Firms

Vehicles That Might Have This Problem

Model Generation Years PainRank
Grand Am 5th Gen 1999–2005 21.43

OK, Now What?

Maybe you've experienced this problem. Maybe you're concerned you will soon. Whatever the reason, you can help make sure it gets the attention it deserves.

  1. File Your Complaint

    CarComplaints.com is a free site dedicated to uncovering problem trends and informing owners about potential issues with their cars. Major class action law firms use this data when researching cases.

    Add a Complaint

  2. Notify CAS

    The Center for Auto Safety (CAS) is a pro-consumer organization that researches auto safety issues & often compels the US government to do the right thing through lobbying & lawsuits.

    Notify the CAS

  3. Report a Safety Concern

    The National Highway Traffic Safety Administration (NHTSA) is the US agency with the authority to conduct vehicle defect investigations & force recalls. Their focus is on safety-related issues.

    Report to NHTSA

  4. Contact Pontiac

    Pontiac Support

    Pontiac Customer Assistance Center P.O. Box 33172 Detroit MI 48232-5172 USA

    This site is not affiliated with Pontiac.