2007 Gmc Yukon Exhaust Manifolds
1. To get the factory exhaust manifolds out, you will need to remove the six 13mm bolts from the flange and three 15mm bolts from the collector. Before you grab the sockets, carefully remove all of the spark plug wires by grabbing the boot and pulling it off of the terminal. Whatever you do, fight the urge to pull on the wire itself; only bad things can happen if you do it that way.
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