General Motors

Dex-Cool Extended Life GM Engine Coolant Problems
Information about Dex-Cool Extended Life Engine Coolant crystallization (sludge) problems.
http://www.geocities.com/b_gillie/dexcool_problems.html

GM Lemon Cars
Has complaints about GM vehicle problems and GM customer service. Visitors can add their complaints to the site.
http://www.gmlemoncars.com

GM Piston Slap -- Like a Knock
Detailed information about "piston slap" with GM engines and what one can do about it. Also has forum and links areas.
http://www.pistonslap.com/

GM Truck Lemon Center
Information about manufacturing defects in the 1999 - 2001 GM trucks and how to resolve them. Includes a listing of manufacturers service bulletins and recalls, postings from other owners about their problems and resolutions, and information about GM buy-backs.
http://agmlemon.freeservers.com/

Pontiac Problems.com
Site shows graphs of Pontiac models with the most car problems, recalls and investigations. Also has information on common Pontiac problems such as power windows breaking, leaking coolant/intake manifold gasket failure, and the anti-theft/Passlock system defect.
http://www.pontiacproblems.com