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Every control module on the 1977-1980 Chevrolet Impala — where it lives, replacement time, and what it takes to program a replacement.
High Energy Ignition Module (HEI)0.5 hr R&Rno coding
📍 Integrated into distributor cap assembly, mounted on engine block
⚠️ Non-programmable solid-state ignition trigger device, not a microprocessor-based control unit. Replace as assembly with distributor or module only. No programming or coding capability.
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 1980 Chevrolet Impala 267ci V8 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.