Bahahahahahahahahahahaha... Jon... be nice to it. They like to burn valves which leads to misfires etc and compression checking shows the issue.
From the GM ESI FSM'* step 1 is "Remove oil pan drain plug. Drain oil and replace with a suitable plug." When you figure that one out..oh boy the fun begins.
Here'* what it looks like in there
Get a shoe horn out, drain plug is out to slide the pan on the frame.
Pretty much how it sits
The Envoy (twin sister) comes apart pretty well for the job
Nope, not tight on the left side
Nor the right side
Back is really roomy
Funny part is..this is sitting down about 2-3 inches because the motor mounts aren't in yet. Hope have to disassemble the suspension to pull the mounts out.
The two top trans bolts are fun. They clipped the trans/transfer case breather tubes up against the bolts. Once you get those out of the way the passenger one isn't bad. (4 feet of extension and standing by the transfer case). The left one though.. I'm looking in through the suspension, see Dan'* hand?
FWIW pulling the head to fix the valves pays about 2 hours less than swapping the entire motor. We should have it running tonight. Motor is from a Trailblazer.