Trouble Code P0449 And 442

spawn0726 · May 21, 2009

Does anybody have or know of a how to on changing out these parts on a 2007 Silverado? I've got these codes and have basically figured out what the problem part(s) are, but haven't seen a repair for a Silverado, just other vehicles close to it. I found this http://www.gm-trucks.com/forums/index.php?showtopic=71540 but don't know if it will work as I haven't had time to even look under my truck to see if the parts are in the same area. Forgot to mention that I have a 4.3 V6 and have recently added a dual exhaust to it. Thanks in advance

bill190 · May 21, 2009

You can order a GM factory service manual set for your specific year and model vehicle (4 books typically) which will tell you how to troubleshoot/repair just about anything on *your* vehicle!

Furthermore, these will tell you how to test various components to see if they are good or not, then you are not replacing parts by "guessing". Thus these books are well worth every cent. Mine paid for themselves in the first month.

Typically you get a general service manual, a fuel and emissions book (codes, computer), unit repair manual, and an electrical diagram manual.

Order these at a GM dealer.

spawn0726 · May 22, 2009

You can order a GM factory service manual set for your specific year and model vehicle (4 books typically) which will tell you how to troubleshoot/repair just about anything on *your* vehicle!

Furthermore, these will tell you how to test various components to see if they are good or not, then you are not replacing parts by "guessing". Thus these books are well worth every cent. Mine paid for themselves in the first month.

Typically you get a general service manual, a fuel and emissions book (codes, computer), unit repair manual, and an electrical diagram manual.

Order these at a GM dealer.

Thanks for the tip!