2004 trailblazer malfunction error code SECONDARY AIR INJECTION SYSTEM?
-- 2004 SECONDARY AIR INJECTION SYSTEM- IN 6 CYLINDER ENGINE INCORPORATES A NEW AIR PUMP AND AN ELECTRONIC AIR SHUT OFF VALVE. had been installed 1year ago now same problem
- jesseLv 51 decade agoBest Answer
very common , AIR pump is blowing water droplets through the air shut-off valve causing the valve to cease.
remove the hose that's coming up from the pump to the valve by squeezing the sides of the plastic pipe, inspect for water in the pipe,if so you need a new valve.
there are 2 fuses you need to check also.
AIR fuse 60amp....
AIR solenoid fuse 15amp
there is little else you can do without the GM scanner, to command certain functions ( pump on&off - valve on&off )
there is also a bulletin for repeat service engine light due to code p0410 if diag. does not isolate the cause (water ,failed component,open circiut,)
to replace the #1 O2 sensor in the exhaust manifold.Source(s): GM tech
- Mr. BadwrenchLv 61 decade ago
The secondary air system is an emission control system that blows air into the exhaust manifold to reduce emissions. It doesn't run all the time. It only comes on at specific times such as a cold start. It has an electric air pump,switching solenoid,and a air control (or shut off) valve.
If any of this falls,the code will reset and the light will come on.
Sometimes water gets into the pump and causes it to lock up.
You will have to get it checked by a shop unfortunately.
There is a chance that another part of the sec. air system has gone bad.
Good luck with your trailblazer!
- AshleyLv 44 years ago
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Most auto repair shops in your area should have no problems with this repair.You should check first with your local chevrolet dealers service dept to see if this is covered under factory warranty due to a factory bulletin on this problem.Best of luck.
- notAminiVANmamaLv 61 decade ago
Oh you are experiancing one of the many probs that you may soon with your 04 Trail Blazer, our Trans has sooo many problems! We just turned it in for a 07 Suburban. Take it to the dealer & tell them you think it is their prob if you have a warranty.