P0410 GMC - pump is working but code still comming up

Question

po410 code on gmc envoy pump is working fuse is ok relay is ok new air pump hoses whats next?

Answer 1

Hi there,

Here is a list of possible causes for this code.

P0410 GMC - Secondary Air Injection System Malfunction

Read more: https://www.autocodes.com/p0410_gmc.html