What years did the Dodge 2500 have transmission problems?

Across its generations, the Dodge Ram 2500 has seen notable transmission problems in several time windows, particularly in the late 1990s, mid-2000s, and early-to-mid 2010s depending on the transmission type. This article breaks down where trouble has been most commonly reported and what to watch for if evaluating a used truck.

Overview: where problems tended to appear by generation

The Ram 2500 has used several automatic transmissions over the years. While not every truck from a given era failed, repair histories and owner reports show concentrated trouble periods tied to specific transmission families. The following sections outline the most frequently cited windows and the issues associated with them.

Late 1990s: 46RE/47RE era

Before the following list, note that late-1990s Ram 2500 models commonly featured the 46RE and early 47RE automatics. These units are frequently cited in owner reports as prone to certain failures, especially under heavy use or towing.

• 1991–1999: 46RE/47RE automatic transmissions were commonly reported to experience valve-body failures, slipping bands, overheating, hard or delayed shifts, and eventual transmission failure.

In this era, the combination of aging components and towing load contributed to higher failure rates, making these model years a focal point for potential buyers researching transmission reliability.

Early to mid-2000s: 545RFE era

Next, the 545RFE transmission became standard on many Dodge Ram 2500 models starting in the mid-2000s. Owner forums and repair data point to a distinct set of reliability concerns during this period.

• 2003–2009: The 545RFE 5-speed automatic is frequently cited for issues such as valve-body/solenoid failures, electronic control problems, and overheating when towing heavy loads or during sustained high-power operation.

While many trucks operated without major issues, the 545RFE period shows a noticeable clustering of documented transmission problems, particularly in heavy-use or aging units.

Early to mid-2010s: 66RFE/68RFE era

As Ram updated its lineup, the 66RFE and later the 68RFE transmissions appeared in newer 2500/3500 configurations, especially paired with diesel engines. Reports of failures persisted, though often with different root causes than earlier generations.

• 2010–2019: The 66RFE/68RFE family saw transmission reliability vary by year and application. Commonly discussed issues include torque-converter problems, clutch/liner wear, valve-body and solenoid concerns, and software-related shifting quirks. Some hot- and heavy-tow applications were more prone to overheating or failure than light-duty use.

In later years, improved cooling, revised valve bodies, and updated software helped reduce some failure modes, but owners still caution that high-mileage trucks or those with heavy towing histories can be at higher risk.

For owners and buyers, it’s important to remember that not every Ram 2500 from these periods experienced a transmission problem. However, these are the time frames most often cited in consumer reports, owner forums, and repair logs as having elevated risk compared with other years and configurations.

What to verify when evaluating a used Dodge Ram 2500

When assessing a used Ram 2500, particularly from the years listed above, look for early signs of transmission trouble. Symptoms include hard or delayed shifts, slipping, overheating, abnormal noises, or the vehicle entering a limp mode. Service records showing regular fluid changes, a history of valve-body or solenoid work, and cooling system maintenance can help gauge reliability. If possible, obtain a pre-purchase inspection focused on the transmission and cooling system, and request a diagnostic scan for any fault codes related to the transmission control module.

Notes on recalls and maintenance

Recalls and service campaigns can address specific transmission issues across model years. Always check the vehicle’s VIN against recall databases (such as NHTSA) and verify that any required repairs were completed. Routine maintenance—especially transmission fluid changes, cooler-line inspections, and towing-related cooling—can significantly influence long-term reliability.

Summary

In short, transmission problems on the Dodge Ram 2500 have been most frequently reported in three broad windows corresponding to major transmission families: late 1990s (46RE/47RE), mid-2000s (545RFE), and the 2010s (66RFE/68RFE). While not inevitable, buyers and owners should pay close attention to maintenance history, towing use, and the specific transmission installed in a given truck. A careful pre-purchase check and ongoing fluid/cooling maintenance remain the best defenses against these issues.

What year did the Ram 2500 have transmission problems?

The Ram 2500 has a pretty widespread transmission issue, particularly in models made from 2020 to 2023. The transmission would overheat and damage it, even when the vehicle was relatively new.

What year of 6.7 Cummins to avoid?

You should consider avoiding the 2007-2010 and 2019-2024 model years of the 6.7 Cummins due to specific issues. The 2007-2010 models had DPF clogging problems because they lacked the DEF/SCR system, and many early 6.7s also had turbo issues. The 2019-2024 models have a known issue with hydraulic lifter failure. While many 6.7 Cummins are reliable, these years have well-documented problems that may require expensive repairs.
 
Years to potentially avoid

• 2007-2010: These models are known for DPF (diesel particulate filter) clogging because they did not have a DEF (Diesel Exhaust Fluid) and SCR (Selective Catalytic Reduction) system. 
• 2019-2024: These models have been noted for hydraulic lifter failure. This issue can lead to catastrophic engine damage and the repair process is complex and costly. 

Potential issues with specific years

• 2011-2014: Some reports suggest avoiding these years due to a combination of issues, including turbocharger breakdowns and transmission defects.
• 2012-2018: Some sources suggest avoiding these years due to reliability problems, including brake system failures, faulty steering components, and turbocharger issues. 

Considerations for all years

• DPF/Emissions Systems: All modern diesels with emissions equipment can experience DPF clogging if not properly maintained or if used primarily for short trips. 
• Turbocharger: While more problematic in earlier generations, turbochargers can be a weak point after high mileage on any 6.7 Cummins. 
• Fuel System: The 6.7 Cummins uses high-pressure common rail injection, which is more complex than earlier systems. Worn injectors can cause poor fuel economy and hard starting. 

What to do instead

• For pre-emissions models: If you want to avoid emissions issues and have high reliability, a second-generation 5.9L Cummins is a good option, though it lacks the power of the 6.7L. 
• For modern amenities with more power: The 4th and 5th generation 6.7L Cummins engines (excluding the 2019-2024 model year for lifter issues) are generally a solid choice. 
• If buying a newer model: If you are considering a 2019-2024 model, be prepared for potential costs associated with the lifter issue. The repairs are expensive, so consider a truck with an extended warranty or a thorough inspection before purchasing. 

Is the transmission reliable on the Ram 2500?

Ram 2500 transmission reliability varies by model year and transmission type, with the 68RFE (found in diesel models) having a reputation for issues like overheating and slipping, especially when used for heavy towing. The 66RF transmission (2014-2018 with the 6.4L Hemi) is also considered less reliable and prone to overheating. However, models with the ZF 8-speed transmission (2019+ with 6.4L Hemi, and 2025+ diesel) are generally considered a significant improvement and are viewed as more reliable. 
This video discusses the reliability of the Ram 2500's ZF 8-speed transmission: 1mGetty's GarageYouTube · Jul 6, 2025
Specifics by transmission and model year

• 68RFE (Cummins diesel):
  • Issues: Prone to overheating, slipping gears, and premature failures, particularly with heavy towing or modifications. There was also a recall for certain 2020-2023 models with 6.7L Cummins engines due to fluid leaks that could cause fires. 
  • Reliability: Can last a long time (300,000+300 comma 000 plus300,000+ miles) under normal use, but heavy-duty use can significantly shorten its life. 
• 66RF (2014-2018 6.4L Hemi):
  • Issues: Overheating under load and problems with the 2-3 shift and valve body are common. 
  • Reliability: Not considered an optimal or reliable transmission. 
• ZF 8-speed (2019+ 6.4L Hemi and 2025+ diesel):
  • Issues: Generally reliable, but some owners have reported issues like bent pressure plates, stripped E-clutch hub splines, and worn clutch drums. 
  • Reliability: Considered a significant improvement over previous transmissions and is generally seen as a more reliable option. 

This video explains common problems in the 8-speed transmission: 54sNational TransmissionYouTube · Oct 1, 2025
Factors affecting reliability

• Towing and heavy use: Overheating and premature wear are common when the transmission is used for heavy towing or other strenuous activities. 
• Modifications: Aftermarket tuning can increase stress on the transmission, potentially reducing its lifespan. 
• Maintenance: Regular maintenance is crucial for transmission longevity. 

This video discusses the reliability of the new Cummins engine: 59sAuto Buyers Guide | Alex on AutosYouTube · Jun 8, 2025
Which models to consider

• Avoid (if possible): Models from 2014-2018 with the 6.4L Hemi, as they have the less reliable 66RF transmission. Some sources suggest avoiding the 2018 model year in general due to transmission problems. 
• Consider: Models from 2019 onwards with the 6.4L Hemi, as they come with the more reliable ZF 8-speed transmission. The 2025 diesel models also feature a new transmission, which is a positive sign for reliability, though long-term data is still limited. 

What year of Dodge Ram 2500 to avoid?

The 2013 model year is often cited as a year to avoid due to a severe "death wobble" issue, while other years with significant problems include the 2012-2016 and 2018 models, which have been linked to various issues like brake and steering system failures. Additionally, the 2014-2018 models with the 6.4L HEMI engine can be problematic due to transmission issues. 
Specific years to approach with caution

• 2013: Frequently mentioned as one of the worst years due to a severe and expensive-to-fix "death wobble" steering issue that occurs after about 30,000 miles. 
• 2012-2016: This range is frequently listed as problematic, with common complaints including steering system failures, brake system failures, turbocharger breakdowns, and transmission defects. 
• 2014-2018 (6.4L HEMI): These years are associated with the 66RF transmission, which was prone to overheating, shifting problems, and valve body/solenoid failures. 
• 2018: This year is noted for a high number of complaints, particularly regarding the braking system. 
• 2019-2022 (Cummins): There have been numerous recalls and issues reported with the Cummins engines from these years, including fire risks related to the intake heater grid relay and other electrical issues. 

Other models with reported issues

• Some 2020-2023 models have also experienced widespread transmission issues, notes CarParts.com. 
• Recent models like the 2022 and 2023 have also had multiple recalls, though they may be less severe than the issues in older years, including problems with the in-car electronics, water leaks, and emission control devices, reports Consumer Reports.