Fitment notes: Side post terminals standard on GM vehicles of this era
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Every control module on the 1980-1985 Chevrolet Nova — 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.
Electronic Control Module (ECM)1.2 hr R&Rdealer / factory tool +0.3 hr1981-1985 with Computer Command Control (CCC)▸ programming details
📍 Passenger side kick panel, behind trim cover
🔧 PROM chip replacement
⚠️ First programmable ECM in Nova. Requires VIN-specific PROM chip installation. PROM is physically transferred from old ECM or ordered separately. ALDL 160-baud (1981-1985) diagnostic connector under dash.
High Energy Ignition Module (HEI)0.5 hr R&Rno coding
📍 Integrated into distributor cap assembly under hood
⚠️ Non-programmable solid-state ignition trigger module. Standard on all engines through 1984. Mechanical adjustment required after installation.
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 1985 Chevrolet Nova 250ci I6 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years.