It's tricky to give a definitive, universally agreed-upon ranking, as reliability can depend on the specific year, model, and even individual vehicle maintenance. However, based on general reputation and some studies, here's a rating of pickup truck brands for reliability, keeping in mind that this can fluctuate:

Generally Considered Most Reliable:

1. Toyota: Toyota, particularly models like the Tacoma and Tundra, consistently rank high in reliability studies and are known for their longevity. Many owners report reaching very high mileage with proper maintenance.
   • Example: The Toyota Tundra has a strong reputation for its durable V8 engines.
2. Honda: The Honda Ridgeline, while a unibody truck, often scores well in reliability ratings.
   • Example: Known for its car-like handling and innovative features, it also holds up well over time.

Generally Considered Above Average Reliability:

3. Nissan: The Nissan Frontier and Titan can be quite reliable, with some sources noting the Titan's improved reliability in recent years.
   • Example: The Nissan Titan, while not as popular as some others, has a reputation for a solid powertrain.

Generally Considered Average Reliability:

4. GMC: GMC trucks (Canyon and Sierra) generally have average reliability scores. Some years and models fare better than others.
   • Example: The GMC Sierra 1500 often has similar reliability ratings to its Chevrolet counterpart.
5. Chevrolet: Chevrolet trucks (Colorado and Silverado) also tend to have average reliability ratings. Like GMC, reliability can vary by year and specific model.
   • Example: Some generations of the Chevrolet Silverado 1500 are considered more reliable than others.
6. Ford: Ford (Ranger and F-Series) trucks, while very popular, often have mid-range reliability scores in many surveys. However, they offer a wide variety of models and capabilities.
   • Example: The Ford F-150, the best-selling vehicle in the US for many years, has seen some fluctuations in its reliability ratings across different model years.

Generally Considered Below Average Reliability:

7. Ram: Ram trucks (1500, 2500, 3500) sometimes rank lower in overall reliability compared to the others listed above, according to some studies. However, they are often praised for their ride comfort and interior.
   • Example: While the Ram 1500 has won awards, some reliability surveys place it lower than Toyota or Honda.

Important Considerations:

• Specific Model Year: Reliability can vary significantly from one model year to the next for any brand.
• Maintenance: How well a truck is maintained plays a huge role in its long-term reliability.
• Driving Habits: How the truck is driven can also impact its reliability.

It's always a good idea to research the reliability ratings for the specific year and model you are interested in before making a purchase. Resources like Consumer Reports, J.D. Power, and owner forums can provide more detailed insights.