[Gregski]

alright, one more tiny little screw on the inside of the cab, this one is hidden directly behind the ashtray, thank you General Motors, the German intern must have designed it's location, LOL

I slid the ashtray out as you would to dump the ashes of your Cuban cigar, then using a long extension I think a 1/4" socket was used to remove that pesky little guy

this tiny screw holds the heater core assembly to the upper vent housing, it's just enough to keep you from being able to remove the lower heater core assembly, so it must be undone, or you risk cracking plastic and you can kiss your concourse de elegance resto goodbye, ha ha