secondary air injection

I am hoping the pros here can help with this issue. In troubleshooting my Secondary Air Injection System, I noticed that the wire on the wiring harness that attaches to the Relay was severed and not allowing power to get to the pump. Because it is severed so close to the wiring harness, it will...

Last year around March, my check engine light came on with this code. Had everything checked out, replaced the Air Pump and the relay and the light went off. Stayed off until this March. Doing some research, I found that most likely I should have replaced the Air Pump Valve as well. I have...

2006 6 cyl trailblazer LT off lease with 40k miles. Chicago weather and salt conditions. now at 46k miles. Problem: On a cold start, pinging noise can be heard best between houses in driveway at idle. Seems to come from front seats forward. Goes away or cannot hear it as car hits normal...

I have an 04 envoy and several months ago it threw a p0410 error. I took it in for service and they took off the hose and said the pump was full of water. I didn't replace it yet, but now inspection is coming up and I need to get it taken care of. 1) Is it easy to replace for a...