Tahoe has been running great since I bought it a couple of months ago. Ran fine yesterday, but today, out of the blue, it won't start. Fuel pump fuse is fine and I am assuming the relay is good. I want to check for spark so my question is about the little heat shields around the spark plug and boot. Do they pop off with the plug wire boot? It is snug and I didn't want to rip anything up. Any other suggestions on where to start?
Thanks
Thanks