I just bought an 04 Trailblazer with a 4.2 L with 90,000 miles on it so it's out of warranty. It runs fine and I drove it almost 1000 miles home with no problems but the SES light came on steady while driving home in the rain. I had the code checked and it came up with code P0410 for secondary intake malfunction. I typically buy the service manuals from GM but just got the vehicle a week ago and haven't purchased one yet so I'm not familiar with where anything is located yet on this vehicle.
I've checked around on the internet and read stuff about water coming in an intake for the pump (smog?) and causing problems with Air pump and valve. I did talk to the service manager at the GM dealership who gave me a bulletin about checking the valve and pump and possibly replacing the motor if it was inoperable but I didn't speak to any mechanics about where this was located.
So now I'm wondering where is this pump located? I didn't know if it's on the engine or on the driver's side or passenger side. I see an air inlet for the air box on the passenger side and one on the driver's side going toward the battery box. I didn't want to start pulling stuff off unnecessarily looking for it. I was also wondering if anyone knew about the service bulletin 06-06-04-017 Mar 06 about Secondary Air Injection-revised pipe placement because my dealer couldn't find it at the time I was in there because I think I had the wrong number at the time. Anyone have any thoughts on this issue? And lastly, will the SES light go out on it's own once I do locate and fix the problem or will I have to have it reset? Thanks in advance for any help.