The 2011 Ram 3500 with 6.7L Cummins is a workhorse diesel that's mechanically solid in the engine department, but the 68RFE six-speed automatic transmission is its Achilles heel—expect transmission-related issues to dominate your repair budget and downtime.
68RFE Transmission Failure / Rebuild
Common · high severity
Typical onset: 100,000-180,000 mi
Symptoms: Hard or delayed shifts, especially 2-3 and 5-6, Slipping under load or when towing, Limp mode with P0734 or P0871 codes, Shuddering during lockup
Fix: Full rebuild with upgraded clutches, solenoid pack, and valve body. Factory units are marginal for heavy towing; aftermarket builders often include billet input shaft and updated pressure springs. 18-24 labor hours for R&R and rebuild.
Estimated cost: $4,500-7,500
Torque Converter Lockup Shudder and Failure
Common · medium severity
Typical onset: 80,000-140,000 mi
Symptoms: Vibration at 45-55 mph that feels like driving over rumble strips, P0741 TCC performance code, Transmission overheating, Metal shavings in pan during fluid service
Fix: Torque converter replacement requires transmission removal. Often done in conjunction with valve body update and solenoid pack refresh. 12-16 labor hours.
Estimated cost: $2,800-4,200
Transmission Solenoid Pack Failure
Common · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Erratic shifting, especially into overdrive, P0871 overdrive pressure switch code, Harsh 1-2 or 2-3 shifts, Transmission stuck in one gear
Fix: Solenoid pack replacement requires pan drop and valve body removal. OE solenoids are failure-prone; many techs recommend upgraded aftermarket packs. 4-6 labor hours.
Estimated cost: $800-1,400
Transmission Cooler and Lines Leaking
Occasional · medium severity
Typical onset: 90,000-150,000 mi
Symptoms: ATF puddles under truck, especially after highway driving, Low fluid level on dipstick, Overheating transmission temps, Visible corrosion or seepage at cooler fittings
Fix: Steel lines rust through at bends or cooler connections. OE cooler is marginal for heavy towing; many owners upgrade to larger aftermarket unit. 3-5 labor hours for lines and cooler.
Estimated cost: $600-1,200
Transmission Mount Failure
Occasional · low severity
Typical onset: 60,000-110,000 mi
Symptoms: Clunk when shifting from park to drive or reverse, Excessive driveline vibration, Visible transmission sag or torn rubber in mount
Fix: Rubber isolator deteriorates, especially with heavy loads. Requires supporting transmission and replacing crossmember mount. 1.5-2.5 labor hours.
Fix: Common failures include DEF tank heater, injector, or quality sensor. Tank heater is most frequent in freeze-thaw regions. DEF injector requires exhaust work. 2-4 labor hours depending on component.
Estimated cost: $400-1,200
Grid Heater Relay Failure
Occasional · low severity
Typical onset: 70,000-140,000 mi
Symptoms: Hard cold starting below 20°F, P0542 intake air heater circuit code, Clicking from relay box during cranking, No glow plug wait light
Fix: Relay contacts burn out over time; relay is in PDC (power distribution center) under hood. Simple replacement, but relay is expensive OE part. 0.5-1 labor hour.
Estimated cost: $200-350
Owner tips
Change ATF and filter every 30,000 miles if towing—68RFE is heat-sensitive and factory intervals are too long
Install auxiliary transmission cooler if towing over 10,000 lbs regularly; OE cooler is marginal
Use quality diesel fuel and change fuel filter every 10,000-15,000 miles to protect CP3 injection pump
Monitor DEF quality and don't let tank run empty—can damage pump and heater
Budget $3,000-5,000 for inevitable transmission work if buying high-mileage
Buy the Cummins engine, plan to rebuild or upgrade the 68RFE transmission—it's a question of when, not if, especially if you tow heavy.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Heavy-duty battery required for 6.7L Cummins diesel engine; dual batteries recommended for optimal performance in cold climates
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Every control module on the 2011-2012 Dodge Ram 3500 — 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.
Remote Function Actuator (RFA)0.8 hr R&Rdealer / factory tool +0.5 hrwith remote start or keyless entry▸ programming details
📍 Behind left rear interior trim panel
🔧 wiTECH
⚠️ Handles remote start and keyless entry functions
Park Assist Module (PAM)0.8 hr R&Raftermarket tool +0.2 hrwith rear park assist▸ programming details
📍 Behind rear bumper, center mounted
🔧 Autel/Launch
⚠️ Sensor calibration may be required
Rear View Camera Module (RVCM)0.5 hr R&Rrelearn only +0.1 hrwith backup camera▸ programming details
📍 Integrated in tailgate handle assembly
🔧 Self-learn
⚠️ Camera calibration lines configured through radio
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 2011 Dodge Ram 3500 6.7L I6 Cummins Diesel 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.