Is your GMC G3500 in need of maintenance? Let us help. 1990 GMC G3500 Magnavan DIESEL 6.2 V 8 Transmission Automatic 3 Replacement parts at near wholesale prices. We have GMC technicians on hold ready to take your calls and help you place an order. Is your G3500 no longer in production? No Worries! We can help you maintain it like new! Ask us how!