03 Check Engine Light Question

[mdoyle]

I bought a code reader a couple of years back. We were stranded in a small town with my Wife's Chrysler Town & Country, the transmission was in limp mode so we bought a code reader to reset it every so often to make it home.

Turned out to be a bad speed sensor and was fixed no charge out of warranty thanks to Keystone Chrysler.

Since then the code reader has come in handy several times for me, my neighbors, and co-workers. It's certainly paid for itself in diagnostic fees and probably paid for itself in free beers and meals via sharing.

I would not hesitate to buy one, they work on just about every vehicle made in the last 10 years. Shop around, some read codes out on screen in full text, others display a numerical code you have to look up in a book.

[TouchdownTN]

Thanks for all the help. I had a local mechanic read the codes and it is a catalytic converter problem and engine misfire. The Hummer dealer says that it should be under warranty (8yr/80k). I hope so because I was told it could be from $400 to over $1000 to fix. Thanks for the help!!!

[hummer74]

let us know what it was after the dealer is done with it. thanks

[Planohummer]

pcm and convertors are 8/80 wty with $0 ded. If the dealer tries to quote you for diagnosis up front that's fine, but once the convertor(s) is/are found at fault, the charge should go away.
The misfiring may also be intake gaskets, find out exactly what codes are present from the dealer.