GM part # 16505537 / 16505538. Working (tested). No burn marks or issues with the circuit boards. I will reseal the black plastic casing with waterproof black silicone. These should work for 90-02 Firebirds, but please do your own research. They all came off of Firebirds from that date range. I can email you the specific part number of each board I have if wanted. $50 including shipping (48 US states). Email me for international rates or Alaska/Hawaii. Guaranteed to work. Email me within 7 days of delivery if defective. Return item for a full refund. I can send pics of the board and casing if wanted. Thanks. Rob (772) 828-1752