This has been pissing me off for the longest time. My scanner picks up a *BAD* Quad Driver 4 on my 95 GP 3100. So I been trying to find out what the hell it all means. Finally I got the official service manuals and there aint jack in it. I also have the transaxle book. Nothing. Absolutely nothing. The only quad related info I can find is in the trouble codes. Quad 1 and 2/3 that relates to shifting gears. But there is no other info except the trouble code number. There is no info or diagnostics on it. Can anyone here clue me in on what the Quad Drivers actually are or how to find out? I understand that their circuits but I'm lost on it because of no direct information. And the strange thing is the service manual names it the Quad Driver Module. Ok. I never seen or heard of a Quad Driver Module. It's not in the index. It's not even in the books. What the hell is going on here? Is this some long lost secret or some guarded book I have to kill people for?