Fitment notes: Side post terminals standard on GM vehicles; high CCA recommended for turbocharged application
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Every control module on the 1987 Buick GNX — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
⚠️ Turbo Buick ECM requires VIN-specific PROM chip replacement; chip must be transferred from old ECM or ordered separately. MEMCAL (memory calibration) unit contains PROM and knock sensor module.
Radio/Audio System Module (Radio)0.8 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Center instrument panel
🔧 Delco radio code card
⚠️ Delco-Bose premium audio system. Theft-deterrent radio requires security code entry after power loss or replacement.
⚠️ Resistor pellet key system. Key resistance must match BCM programming. Incorrect key causes 3-minute lockout. Bypass modules available aftermarket.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 1987 Buick GNX 3.8L V6 Turbo (GNX) and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.