I'm seeing so many conflicting posts about the plugs for my 03. Acdelco 41-110, 41-985, 41-962.....which one is it?
Thanks for the help.
03 5.3 trailblazer North face
Thanks for the help.
03 5.3 trailblazer North face
Saw that. But thanks.And the owners manual says... 100k miles.