Added this to help if the name confuses
The valve is located just above the air pump and is often refered to as
an (anti-backfire valve), it redirects exaust to the cylinders as
as to the $$ the dealer wants I was shocked to say the least.....
I am lookin for a used one now but I could very well end up with the
same problem with a used valve :(
You might try a Non-autozone type parts store such as a NAPA, or
another one that supplies profession mechanics for the majority of their
income. Any real Parts Store can take the GM part number and cross
referance it to their own brand (such as NAPA) or aftermarket brands.
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