How do you replace the stock head unit with a aftermarket one on a 92 geo tracker?
It is real easy did it twice in about 3 and a half hours. The first unit the CD player was messed up. Anyway pick out your new head unit. (Remember its a tracker not an escalade) Remove the old unit the trim ring around the old one removes from the top careful around the vents. Then 2 skrews on the face plate of the old radio. Remove the ashtray and the Phillips head skrew in the top edge this should allow the radio to slide forward. There is a curved piece of metal that acts as a brace for the radio remove this also unplug it and slide it the rest of the way out. Follow instructions on mounting the new unit. Get an adapter plug at best buy or Wall-Mart, Take new unit solder it to the adapter following the diagram provided with adapter, plug in to new unit and to wireing harness set the clock and go.