so im trien to get my inspection sticker here in nc and have had the truck read and thats what they say is wrong, i was told to change a sensor so i ended up chagin 2 sensors,lol, and neither one worked(mass airflow and the other lil sensor thats in the airintake just after tha mass airflow one), anyhow that didnt help. so here i am with no clue as to what the problem is, so if theres anybody that might have a clue as to whats wrong some info would greatly b appreciated. oh yea its a 2001 blazer 4.3 4x4:banghead:

The DTC, (Diagnostic Trouble Code), will only tell what circuit malfunctioned. It does not tell you to change a sensor, only which circuit to check. What DTC was in memory?

srry i didnt have the code b4, but just got bak from advanced and the code is a P0410 secondary air injection system malfunction, like i said b4 i was told to change the mass airflow sensor and the o2 sensor and the ses light is still on, hope this helps u to help me, cawz lord knows its drivin me crazy trien to figure out what to do

Ask your local dealer to check for technical service belletins on your vehicle, they will probably come up with this one:

Bulletin Number: 40604015 Bulletin Date: 20040301 Category: 061000 ENGINE AND ENGINE COOLING:ENGINE
Summary: CHECK ENGINE LIGHT ON, DIAGNOSTIC TROUBLE CODE (DTC) P0410 SET. *TT

If I do contact a dealer, what will that involve? Not to be rude, but if you know about the bullentin, cant you tell me whats in it?

The dealer will advise you if your vehicle is covered. There may or may not be a charge to you. They will advise you before they do anything, if there will be a charge to you. The bulletin has to do with re-routing the lines and repairing the system, if necessary.

is this bulletin only going to help with newer blazers? i have a 2001 blazer thanks :screwy:

Check with the dealer, some bulletins are open ended, some have mileage restrictions and some have a date you must have the work done by. Not sure on this one.