Happy Hummer
If it becomes necessary to replace your C.O.P (Coil On Plug) use can use one of the following numbers to reference the needed item.
06 H3 (I5 3.5L): 12568062, 8-12568-062-0
07 H3 (I5 3.7L): AC Del D1935E Ignition Coil
Tech, Spec's & Data