Yes it will work in your car but you would have to wire it in manually. Only 97-98's had the digital plug as well as the analog one and are plug and play with either. You would have to splice a bunch of wires to get a digital one to work for you, but a few have done it and had success. Like Herc said, do a search.
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1998 Pontiac Grand Prix GT
WizAired CAI, Impala 12" Brake Upgrade, ZZP Alternator Rewire and Voltage Booster, Rotated Dogbone Mounts, Kicker KS690 6x9s, JBL GTO427 4s, JBL P652S 6.5s
2001 Ford F150 XLT SuperCab
Stock, LineX, 212K