Bleeding the brakes - Can it be done with the wheels on?

[66gtk]

My ERA has the GM disc brakes up front the MC is nice and full of super clean looking brake fluid. Looks brand new, still and the pedal is firm. I can't be certain how old the fluid is and if it's got moisture in it. Car seems to stop just fine with street use, but could it be better???

I was wondering if I could simply bleed the brakes with a car on a 4 post lift without removing the wheels? Anybody successfully accomplished this? I think the rears (Jag IRS) can simply be accessed from the panel inside the car, right? I was told my car has NEVER had the wheels off since new, so wondering why my fluid looks so fresh/clean if you need to remove the wheels to bleed the brakes???

I'm attaching a photo of the front calipers as seen from under the car on a 4 post lift. Are the bleeders located on the top where the arrow is pointing? Are those the only bleeders (1 for each caliper)?


Thanks!