Well, I just replaced the air pump on my 2000 Blazer, and at the same time while diagnosing it, I seen that the air solenoid valve...

was bad. Ok, search online for a replacement. Nobody lists anything for this part. I think I may have found the original part #, AC214615, but that is no longer sold. Even AC Delco'* website no longer shows a listing for it.

I stumbled upon another part similar to this one, Duralast/Canister Purge Valve Solenoid PV164. Which is IDENTICAL to the one needed for the secondary air system. This one costs $38 at Autozone.

But wait! My 97 Bonneville has something similar!

Duralast/Canister Purge Valve Solenoid PV137


And this one only costs $23. Almost a $15 difference because of a bracket.

So, being the experimental and cheapo that I am, I opted for the $23 version. One .003 cent zip tie later and I was back in business with a fully operational secondary air system.

Good deal. Why do they always have to make 100 different versions of the same thing?

Good question, and I have 2 answers.

1. To make money,

2. and it allows us to experiment with different parts should one not be available. (lesson learned here, don't stop at the unavailable part, look for alternatives).

Well said.