Ouch. Yea, they are a PITA IMO, except for the dogbone on the trans. The big one on the passenger side can be hard to get out because of the 2 15mm bolts on the underside of the bracket.
The front trans mount isn't that bad either. 2 bolts on the trans and 3 on the frame.
The rear trans mount is another story. 3 on the trans and 3 on the frame. The 3 to the trans are difficult to get to because of the steering rack.
Your gonna need some swivels, pry bars, floor jack or engine hoist(to take weight off).
To get the 2 15mm bolts on the big mount, you will need a 15mm open end and another open end to extend the first wrench. Its a definite knuckle buster doing this, but sockets will not fit in that spot. Unless Boosty knows another way.
1997 Pontiac Bonneville SEi-SCRAPYARD
2000 Chevrolet Blazer LT 4X4 4.3L
2002 Chevrolet *-10 LS Ext Cab 4X4 5.7 V8