there are no repair manuals for the 95-99 riv except for the gm service volume set. i think there is a how to in the FAQ but if not i can email you some instructions. (the site i got it from now charges to view it so i cant just post it up
its not difficult to pull the head unit, baisicly just remove the black part of the top inner part of the dash then undo 3 side screws and 5-6 top screws(?), unsnap the entire dash, unplug the traction control/reset and light wires and then there are 3 screws holding the head unit in place.
are you our first female riv owner??? welcome to the forum!
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black -daily