Fitment notes: Standard top post battery; verify physical dimensions for aftermarket hold-down compatibility
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Every control module on the 1981-1993 Dodge D150 — where it lives, replacement time, and what it takes to program a replacement.
Instrument Cluster / Body Computer (IC)1.5 hr R&Rno coding
📍 Behind instrument panel
⚠️ Electronic clusters on higher trim levels only. Most D150s used mechanical speedometer/gauges. Electronic versions handle basic body functions and warning lamps.
Single Board Engine Controller / Single Module Engine Controller (SBEC/SMEC)1.2 hr R&Rno coding
📍 Engine compartment, driver side firewall or inner fender
⚠️ Introduced 1981-1982 on fuel-injected models only. Carbureted models (majority through 1987) have no ECM. 1981-1987 models use flash-code diagnostics via CHECK ENGINE lamp. 1988+ use DRB-II for enhanced diagnostics. Most replacements are plug-and-play; late 1990s+ may require theft-deterrent relearn
Anti-Lock Brake System Controller (ABS Controller/CAB)1.0 hr R&Rno coding
📍 Frame rail near master cylinder or under driver seat
⚠️ Optional equipment, rare on D150. Rear-wheel ABS (RWAL) introduced late 1980s. Requires bleeding procedure after replacement.
Radio / Audio System (Radio)0.5 hr R&Rno coding
📍 Center dash
⚠️ Standalone unit, no integration with other modules.
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 1984 Dodge D150 318ci V8 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.