I am definitely a profit for the gmt360 chassis and the wonder they posses.
However one of the things that I can't commend the chassis on is ac compressor maintenance access.
The compressor was stuck when I bought the car 85k miles ago and when dad helped me put it back together he ordered the cheapest compressor on eBay. It started rattling this spring and it turned out to be the clutch bearing. I thought about just swapping the clutch since the pump itself was fine but i found out these compressors really aren't home serviceable and I admitted I had to swap the whole thing.
I knew the project was going to suck and it doesn't disappoint. These chassis aren't really designed from day one to have an LS so pulling the compressor isn't really that fun.
You have to remove the compressor mount from the block, move it forward an inch and then unbolt the compressor from the mount, remove the rad fan and rad hoses and then wiggle it funny to sqweeze the compressor out separate from the mount. That was after removing the air box and window washer resovior too.
Biggest punch in the gut was putting it together and then going underneath to install the last two bottom bolts in and realized I have to install it loose through the compressor before I tighten the mount to the block since the bolt is too long and it hits the frame.
Pulled a vac on the system and if it holds I'll charge it. Dumb ac seal kit I ordered didn't include the suction side hose to compressor seal so I reused the old one that didn't look that great so hopefully it holds.
Also did an oil change so I'm slowly knocking stuff out. I need to weld the last patch in the frame and swap out the other upper rear control arm along with changing the tcase AWD actuator before winter.
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Don't make me go take pics of the underside of the wife's Envoy. They will make you jelly.