The all-new 2019 Blazer delivers attention-grabbing design, superb functionality, and a bevy of seamlessly-integrated technologies. One of these technologies is capless fuel fill, which removes the traditional gas cap in hopes of making fueling the new Chevy crossover SUV more convenient.
How It Works
All that’s needed to fuel the new Blazer is for the owner to open the fuel door on the outside of the vehicle, insert the nozzle into the fuel chamber and begin fueling. Inserting the nozzle into the chamber automatically pushes aside the two flaps/doors, in much the same way that a one-way valve works in various plumbing applications.
Once finished fueling, simply remove the nozzle and close the fuel door, with no unscrewing the gas cap, fumbling to hang it, or replacing it.
Improving An Existing Technology
Capless fueling has been around for quite some time now, but GM’s implementation differs from those used by other automakers, since GM’s system features two flaps or “doors” inside the filler tube, with rubber seals around the edges of the flaps ensuring that the system remains air-tight and locks the fuel in.
Meanwhile, capless fuel fill systems used by other automakers only have one such door, making them prone to fuel leaks. What’s more, GM’s system has no internal drain, which eliminates the potential of fuel dripping from the filler chamber, though we should note that things might get messy if one were to over-fuel the vehicle, which is rather difficult to do with today’s sensor-equipped pumps.
Benefits & Advantages
Besides the obvious benefit of greater convenience as a result of not having to remove the fuel cap, capless fuel fill has a host of secondary advantages for both the car and the driver.
Driver benefits include keeping the driver’s hands clean and free of dirt and fuel, while also eliminating the risk of leaving the gas station with a dangling or missing gas gap.
Car benefits consist of keeping the vehicle’s paint clean and free of fuel and scratches caused by a swinging gas cap and enabling a smaller fuel door, as it no longer needs to accommodate a hand, in turn making the gas door less noticeable on the Blazer’s exterior.
Additionally, capless fuel fill also has the ability to keep the Blazer running smoothly. This benefit typically raises some questions, so here’s a brief clarification: since fuel systems must be fully sealed, a loose cap can trigger a “check engine” light, thereby leading to a service visit. A capless system simply eliminates the possibility of a loose gas cap. It’s a small detail, but one that separates a good vehicle from a great one.
We asked GM about the reliability of the system, and were told that the “two doors (flaps) in the filler tube are designed to assure the system will remain air-tight through years of ownership.”
Second Chevy CUV To Adopt Capless Fuel Fill
The 2019 Blazer is the second Chevrolet crossover to use capless fuel fill, with the second-gen Traverse being the first.
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