Hey guys,
I'm trying to change my plugs but I'm having a hell of a time figuring out how to get the connector on the coil pack off. It seems like my engine is completely missing the locking tab!

Thanks

 

I have a YouTube video here that should help you. The orange tab is not missing on this man's Sonic. I don't recommend cleaning plugs as they are cheap, even Iridium plugs. I would not worry about the tab as it will likely stay put without it. I am an older guy, and back in my day, we all changed plugs often as the leaded gasoline and burned motor oil would fowl the plugs up more quickly then these days. My father's old Chevy C-60 medium duty tank-truck had only two months or so to change plugs back in the late 1960's and 1970's.

It had the old GM/Chevy 366 cubic-inch big-block motor with sodium-filled Stellite valves, which were used in the Chevy Corvette 427 C-I and other motors. They even had spark plug sandblasting machines everywhere to clean the lead and carbon off a used plug back then, when 105 octane premium gasoline had lots more lead then regular grade gasoline. Just cleaning a spark plug in some cleaner, as this man was doing won't work. I didn't know that GM was still using crush washer plug motors, as seen in the video. I had though all GM motors came with the beveled, no-crush washer spark plugs, not that means anything really, when some cars can go over 100,000 miles on a set of spark plugs. Those two plugs in the very back of that 366 were a real pain in the **** to get to, so I still always us "Never-Seize" on all spark plugs, no matter what.

Here is the Y-T video:


Good luck to you, Dijon!