Yes, 88 Pins and clips only keep pads quietly in place. Pads transfer Brake loads at the edges of pad metal to the caliper then to caliper sliders. Unlike sliders for 84-87 Fiero and similar, 88 Fiero Sliders take full brake loads.
The Tools needed here are GM/Kent-moore:
J-6125-1B "small" side hammer tool
J-36620 pin puller
While many side hammers works, the pin puller (and J-36621 and others) is only on Eflay etc often at high $.
Might make one using correct size Bike Spokes etc. Most Spokes use harden metal and already threaded.
Alternate is use a Roll Pin Punch on back to remove. Should fit since above "nut" will need same room to work in pin hole but maybe no room for punch or hammer in the car w/o removing the caliper from bracket.
These are made different then standard pin punch w/ square ends. Don't use standard punch or worse center punch.
Right RPP has to fit and just under hole diam to push out roll pin w/o damage. RPP has part to stay centered on the pin but some pins don't play well because pin specs vs punch specs.
Related Items:
J-36621 Piston Rotator Wrench for Rear brakes is so "Dealers" can replace pads
w/o taking calipers and rotors off the car.Many fools do just that and owners have frozen slider and other problems because didn't clean them & lube w/ brake grease etc.
Can use modified version of clamp method w/ removing P-brake lever for rear. Have to replace big clamp because that won't fit. Might use big "pump pliers" but watch won't tear a boot etc. See my Cave,
Clamp Method notes⚠️ Warning: Removing the "bridge" bolts isn't a good idea.
Every time you take them out and put in the thread
will wear and can cause huge problems w/o further warning.
You should
Not Do This even to rebuilt them. GM made tools to rebuilt w/o removing the bridge...
J-36622 boot install tool
J-36623 piston installer also use w/ J-36622. Think this tool should also work using "clamp method" to fully retract the pistons.
Likely make both of them. Example: I make many seal installers using cut down plumbing parts/pipes w/ most are plastic.
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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)The Ogre's Fiero Cave[This message has been edited by theogre (edited 11-12-2020).]