I have a question about my 04 Chevy Silverado 1500 LS. It has to do with speed. How can I get more speed out of it, right now I can go 97 then the truck will lose just a little power and go to 93 before it will gain power. Once it hits 97 again it will repeat the same process. I know that it is supposed to operate like this. I was wondering if there was any way that I could bypass this feature.

On these trucks there is a fuel shut off at 97. Just like mine... If you wish to raise the top speed you can buy a speed control module or a Hypertech Power Programmer. With the Hypertech I believe you can move it to 128. You can do other things with the Hypertech like change shift points and adjust for different sized tires. At about $350 I dont know if that would justify for you.

On these trucks there is a fuel shut off at 97. Just like mine... If you wish to raise the top speed you can buy a speed control module or a Hypertech Power Programmer. With the Hypertech I believe you can move it to 128. You can do other things with the Hypertech like change shift points and adjust for different sized tires. At about $350 I dont know if that would justify for you.

true dat

you can find the hypertechs for less on ebay, just gotta look around

No offense to you guys or anything, but doesn't it seem like your trucks might not be the safest vehicles to be doing 120+ mph in, not only for you, but for other people on the road as well? I mean, there may be a reason that GM engineered there to be a fuel cutoff at 97, just as many german companies engineer their sportscars with a speed limiter of 155; the car was simply not designed to safely go faster than that as it came equipped from the factory. Of course, with lowered and hardened suspension, Z rated tires, and performance brakes, it would become more sensible to reach those kinds of speeds in a truck, although the aerodynamic shape would certainly still not lend itself to high speed stability...

No offense to you guys or anything, but doesn't it seem like your trucks might not be the safest vehicles to be doing 120+ mph in, not only for you, but for other people on the road as well? I mean, there may be a reason that GM engineered there to be a fuel cutoff at 97, just as many german companies engineer their sportscars with a speed limiter of 155; the car was simply not designed to safely go faster than that as it came equipped from the factory. Of course, with lowered and hardened suspension, Z rated tires, and performance brakes, it would become more sensible to reach those kinds of speeds in a truck, although the aerodynamic shape would certainly still not lend itself to high speed stability...

blah blah blah, no one asked you. "bimmer" IS NOT pronounced "beamer"!

No offense to you guys or anything, but doesn't it seem like your trucks might not be the safest vehicles to be doing 120+ mph in, not only for you, but for other people on the road as well? I mean, there may be a reason that GM engineered there to be a fuel cutoff at 97, just as many german companies engineer their sportscars with a speed limiter of 155; the car was simply not designed to safely go faster than that as it came equipped from the factory. Of course, with lowered and hardened suspension, Z rated tires, and performance brakes, it would become more sensible to reach those kinds of speeds in a truck, although the aerodynamic shape would certainly still not lend itself to high speed stability...
go back to your bimmer page...we can go fast if we want to...

blah blah blah, no one asked you. "bimmer" IS NOT pronounced "beamer"!

WTF? I never said it was. FYI, the cars are bimmers, the motorcycles are beamers. Why are you so offended?

were not offended just ticked at people who would come in here and try to act like our mothers saying o my god i think thats unsafe.....

you do your thing we'll do ours.

just stay out of here
unless you get a silverado..99up

I kinda agree with him to a certain extent. I've been well over 115 in my truck and it scared the piss outta me...of course mine is higher than a 2wd..... it was very squirrley. I need a 2wd,....grrrr

yeah in a newer truck it is perfectly safe as long as you arent hauling a u-haul behind ya lol. my 73 chevy c-10 cheyenne has a tired old 350 in it and its carbureted so theres no speed limiter and ive even had that at 115 before and it doesnt even shudder or anything. smooth as a babys bottom, and thats a rusted out pile of crap too, so a good condition one is perfectly fine most likely.

i bet the reason for the 97 mph fuel cut-off is for handling purposes. trucks cant swerve to miss a squirrel at 130 miles an hour, you'd likely do about 50 kazillion flips and end up kicking the bucket. also, i have a friend who went 140 on the interstate once in his 86 silverado with a 450 horse 454 and he said the back end started to loose traction from the wind picking the lightweight bed off the ground a little bit. definately unsafe...


by the way, lets say you have a regular cab short bed with a stock 8.1 liter v8 from 2002 or something. if there wasnt a speed limiter, how fast could that go on a flat straightaway? does anyone know?

a high top speed is dangerous in any vehicle. 0-60 and 0-100 times are what I want to make gains in

by the way, lets say you have a regular cab short bed with a stock 8.1 liter v8 from 2002 or something. if there wasnt a speed limiter, how fast could that go on a flat straightaway? does anyone know?

very damn fast

I had a call yesterday afternoon 10-50 multiple injuries....me and the old Z struck out...I'm guessing we held 110 or better in OD with the a/c runing..never broke a sweat! Nelson rules!!