secondary air injection malfunction??????

[cptcannibas]

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

[old_master]

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?

[cptcannibas]

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

[old_master]

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

[cptcannibas]

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?

[old_master]

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.

[fly066]

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

[old_master]

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.