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Every control module on the 1981-1982 Chevrolet LUV — 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 hrCalifornia emissions only (C4 system)▸ programming details
📍 Behind right side of instrument panel, above passenger footwell
🔧 PROM chip replacement
⚠️ Isuzu-sourced C4 computer-controlled carburetor system; PROM chip must be transferred from old ECM or ordered separately by VIN. Federal emissions models remained fully mechanical through 1982.
Voltage Regulator (VR)0.3 hr R&Rno coding
📍 Firewall or alternator-mounted
⚠️ Solid-state unit; no programming 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 1981 Chevrolet LUV 2.2L I4 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.