Shut off the top speed limiter 2007 2500 HD?

Answer 1

Your Silverado is probably limited by it's internal computer system to 90 MPH. This was installed by the factory to prevent the truck from being driven faster than the speed rating of the factory installed tires. Most New Body Style Model Silverados have tires that are speed rated with a code of S which stands for a maximum speed rating of 112 MPH. Chevrolet also offers an optional speed limiter of 70 MPH which I believe is used mostly on trucks being used for business purposes and being driven by company employees. Our local Chevrolet dealer has advised that changing the speed limiter on the truck will void the factory warranty. With that in mind the Speed limiter can be altered to allow your truck to operate at higher speeds. It will cost you some money. A device is available for purpose that will plug into your trucks computer and allow you to modify the top speed limit. This allows you to custom tune your trucks factory performance, change the speedometer for different size tires and read engine trouble codes. For your safety you should not operate your truck above the tires speed rating. If you keep the factory tires on this truck and if they are S rated you should only raise your top speed to 110 MPH which would be 2 MPH less than the tire rating. For most people a top speed of 110 MPH should be enough however if you have the right tire mounted for example a W or Z rated tire your truck should be capable of very high speeds as the Chevrolet Motor is very powerful. Operating at very high speeds in a 2500 HD requires caution as these trucks are a little top heavy and tend to wiggle a little bit when you are operating in the triple digits especially if it is a four wheel drive. The most popular model is made by Hypertech although there are several companies that produce the type of unit capable of doing this. You should shop around to find the one best suited to your needs. It is probably going to cost you around $400. I feel it is important to purchase a unit that is capable of returning your truck back to factory settings. You will be risking your warranty coverage because the black box inside your truck will record all the changes in its memory and that information can be downloaded by the dealer if they choose to and used to deny your warranty coverage. The trucks computer also records how fast your truck has been driven and this can be used against you in court or even by your own insurance company if you are involved in an accident. Big Brother is watching you. Do you still want to do it? Only you can answer that one. We still live in a free country (kind of) as long as you got enough money.