134 Fwy to Buena Vista Offramp.  Eastbound on Riverside Drive until you get to the GM Training Center.  Or N/B 5 Fwy (just past the 134 Fwy) exit Western Ave, use west offramp. Proceed straight to the stop sign at Riverside Drive and go right to the GM Training Center, which will be on your right side.  Parking in the rear and please do not use the parking spaces next to the building as they are reserved for instructors and test vehicles.  Otherwise there is plenty of parking.