There are a few off road shops up there, sorry I can't find the names right now...
If you are stuck, stop by Butcher's Block tomorrow (Sunday) and ask for Steve. That is my Dad. He knows little to nothing about rigs but he knows A LOT of people in BB from living there over 18 years. See if he has any ideas. There house is too small or I would offer you a space to park until fixed. Worst case, I can find an excuse to visit home if ya need pars delivery...
EDIT: Found them. Mostly Jeep stuff, but worth a try if they are open.
http://www.boulderbars.com/
ALL J PRODUCTS PHONE NUMBER: 909-866-4800
EMAIL:
INFO@BOULDERBARS.COM
PHYSICAL SHOP ADDRESS: 41610 BROWNIE LANE, BIG BEAR LAKE, CA 92315-1888
USPS (POSTAL SERVICE) MAILING ADDRESS: PO BOX 1888, BIG BEAR LAKE, CA 92315-1888