If you ask anyone what the best SUVs are for pure dependability, a lot of people will answer with one of Toyota's models. They're not wrong. Toyota has rightfully earned a reputation for great reliability. But, the Japanese giant isn't the only option around for if you want an extremely dependable SUV. There's another option out there that can actually outdo Toyota on reliability, and it comes from a brand that you might not have expected. The 2000s Was The True Start Of The Age Of The SUVs Bring A TrailerWhile the demand for SUVs started off in the 1990s, it was the 2000s where things really started taking off. The American SUV market started becoming flooded with SUVs of all sizes. Some of those SUVs were monstrously huge, with workmanlike underpinnings and massive engines. Others were a bit more manageable, with more car-like construction and less of a focus on off-road ability. Whatever the case, there was definitely one brand that gained a leg up on the others thanks to reliability. That brand was Toyota. Toyota Has Typically Led The Way With Bulletproof Reliability ToyotaEver since they started coming onto the market, Toyota's SUVs have usually led the way for those who place bulletproof reliability above all else. Lots of people buy the RAV4, the Highlander and the Sequoia every year for a reason. These cars have built a reputation for being dependable, and that's what people want in a practical daily driver.One particular American staple won't go down without a fight, though. That was especially the case in the 2000s. From 2000-2006, Chevrolet produced an SUV that was so rugged and reliable that it could actually match and beat Toyota on reliability. It's also still desirable to this day, and enthusiasts often prefer it over its more modern counterparts. The Second-Generation Chevrolet Tahoe (GMT800) Is A Super-Tough, All-American SUV That's Easy To Look After Bring A TrailerThere's probably no SUV that illustrates what the American SUV market was like in the 2000s better than the GMT800 Chevrolet Tahoe. Based on the same platform as the Chevrolet Silverado pick-up truck, the GMT800 Tahoe was intended to be a practical, reliable and rugged family transport that could handle on-road and off-road driving with ease. That's something it certainly managed, thanks to being both comfortable and capable. Its reliability is especially impressive. It's commonplace for GMT800 Tahoes to rack up huge mileages with pretty much no problems.Of course, the GMT800 Tahoe does have its known problems. This forum thread points out that (like all older cars) rust is a big problem to look out for. The General Motors 4L60E 4-speed automatic transmission that these cars used exclusively is also known to have issues. But, people in the same thread point out that the majority of the problems that happen on these Tahoes are easy to fix. It's Over-Engineered Compared To Other SUVs Bring A TrailerThanks to those pick-up truck underpinnings, the GMT800 Chevrolet Tahoe is almost hilariously over-engineered for an SUV. It's got a body-on-frame construction, with a full-box ladder frame chassis. While that's a bit of an old-fashioned way of building a big SUV, it gives the Tahoe much better body rigidity than the monocoque-bodied big SUVs it was competing against at the time. That made it better for more serious off-roading, as well as towing.That over-engineering definitely played a part in how reliable the GMT800 Tahoe turned out to be. After all, anything that's based on a pick-up truck is going to be designed more for rugged reliability. It's Mechanically Simpler Than Later Tahoes A lot of people pin the incredible reliability of the GMT800 Tahoe on it being much more mechanically simple than Tahoes that came after it. The GMT800 Tahoe is built on simple, solid engineering. The Vortec V8 is a pushrod engine that comes from the LS family - a family of engines that are known for being utterly dependable, no matter what vehicle they're placed into. The 4L60E automatic transmission is also a much simpler unit than the more modern automatics that later Tahoes used, and the transfer case on four-wheel drive versions is a simple mechanical unit with no electronic systems. That means there's a lot less that can go wrong in the first place. Plus, if something does go wrong, it can be quickly fixed with a bit of mechanical know-how. Spare Parts Are Plentiful A big reason why the GMT800 is known for being easy to fix is that spare parts are incredibly plentiful. A lot of these cars were produced, they were used for police and military uses as well as on the civilian market, and they share a lot of parts with other General Motors vehicles. Put all those factors together, and it's inevitable that you're going to end up with a car that you can get spare parts for almost anywhere. It's not even that difficult to get parts for these cars if you're outside of North America! Other GMT800-Based SUVs Are Just As Reliable Via: CadillacThe GMT800 Chevrolet Tahoe's legendary reliability isn't just a one-off. It's something that spread to the other GMT800 platform SUVs, too. The ninth-generation Chevrolet Suburban, second-generation GMC Yukon and second-generation Cadillac Escalade all share in the second-generation Chevrolet Tahoe's absolute dependability. As shown in this thread, it's known for GMT800-platform Escalades with the 6-liter V8 to reach up to 500,000 miles if they're properly looked after. GMT800-based GMC Yukon Denalis (which have the same 6-liter V8 as the Escalades) are known to reach similar mileages, too. How Much Will A GMT800 Tahoe Cost You Now? via Bring A TrailerAs of now, the prices for the GMT800 Tahoe are fairly sensible. The average used value is currently sitting at around $14,635, with values staying fairly stable. There are some indicators that the values of these cars are going to skyrocket, though. A couple of examples have gone for absolutely crazy prices. One with only 1,500 miles on the clock sold for $52,000 in 2023, and another with 6,000 miles on the clock sold for $52,500 in 2024. These are both exceptionally good, super low mileage examples though. The vast majority of GMT800 Tahoes you'll see on the used market won't sell for more than $20,000-$30,000, even if they're in mint condition with low miles. Later Tahoe Generations Have Carried On That Reputation For ReliabilityChevroletWhile the later generations of the Chevrolet Tahoe may be more complex than the super simple GMT800, they've carried on that reputation for being almost faultlessly reliable. The current-generation Tahoegot a score of 3.5/5 from RepairPal, and the majority of the issues it's had since its launch have been fixed by recalls. Even though SUV purists might prefer the rugged simplicity of the GMT800 Tahoe, you'll definitely be able to rely on those more modern iterations just as much.Sources: Bring A Trailer, Cadillac, Chevrolet, Classic.com, GMC, Reddit (r/ChevyTahoe, r/GMT800), RepairPal