Secondary Air Injection System Malfunction,where is it on my 2001 gmc sonoma 4.3L

Secondary Air Injection System Malfunction,where is it on my 2001 gmc sonoma 4.3L

Welcome to AF.

Please do not resurrect old threads. I would recommend posting in the proper forum where people with expertise can answer your question quickly.

Therefore, I am moving your post to the GMC Sonoma shared forum with Chevrolet Blazer from Olds Aurora.

The pump is lower right corner of engine compartment.
Does the air pump run?
Has it blowed the fuse?

See the "How To/Tech section" where the complete system is described - should help.