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1998 Suburban

Dieselfixer

By Dieselfixer
in Ask A GM Technician

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Dieselfixer Enthusiast

Dieselfixer

Posted
Posted

Hi all

I am trying to find out if the speed limiter that cuts the power at 96 mph can be set lower. On one of the trucks at work, a 98 Suburban, we would like to set the high spped setting so the truck can't go more than 65mph. Is this possable?

 

Thanks!

merlin5577 Senior Enthusiast

merlin5577

Posted
Posted
Hi all

I am trying to find out if the speed limiter that cuts the power at 96 mph can be set lower. On one of the trucks at work, a 98 Suburban, we would like to set the high spped setting so the truck can't go more than 65mph. Is this possable?

 

Thanks!

 

Yup, just need to reprogram the ECM. Most hand held tuners have an option for this.

L29er Senior Enthusiast

L29er

Posted
Posted

trying to slow your employees? i don`t recommend it, if they do any highway driving it can be unsafe beleive it or not to do so, sometimes you need the extra mph to quickly pass a tractor doin 25. If they get caught in the passing lane head on cause they couldn`t go fast enough.....yikes!

Dieselfixer Enthusiast

Dieselfixer

Posted
  • Author
Posted
trying to slow your employees? i don`t recommend it, if they do any highway driving it can be unsafe beleive it or not to do so, sometimes you need the extra mph to quickly pass a tractor doin 25. If they get caught in the passing lane head on cause they couldn`t go fast enough.....yikes!

 

Well when I'm running 75mph and he passes me like I'm sitting still it's time to slow this guy down or fire him. I figure company trucks like Wal-Mart, JB Hunt and a few other trucking companies are set at 65 so that should be enough for this truck.

Dieselfixer Enthusiast

Dieselfixer

Posted
  • Author
Posted
Hi all

I am trying to find out if the speed limiter that cuts the power at 96 mph can be set lower. On one of the trucks at work, a 98 Suburban, we would like to set the high spped setting so the truck can't go more than 65mph. Is this possable?

 

Thanks!

 

Yup, just need to reprogram the ECM. Most hand held tuners have an option for this.

 

 

Is there a tuner you would recommend for this?

Zembonez Senior Enthusiast

Zembonez

Posted
Posted

A 98 Suburban isn't exactly a Ferrari. I think I'd hire somebody to drive it that I trusted if I were you. Speed really isn't the issue. 45 mph is plenty fast to cause carnage if the driver is an idiot.

L29er Senior Enthusiast

L29er

Posted
Posted

Screw a block under the gas pedal, and if you are the superior tell him to slow the F**k down or your outta here! Then setup a fake interveiw when hes around to scare him alittle...HAHA

grosss Enthusiast

grosss

Posted
Posted

Most handheld tuners aren't cheap, so you'd have to be willing to spend the money. If top speed adjustment is all you're looking for, you can go get a Hypertech Power Programmer III, it'll do the trick and probably save you a little money on gas. Hypertech has a few different kinds of programmers that can probably do the same thing. Another one that can probably do it is the DiabloSport tuner. If you want, do a search for programmer on the forum and you should find the brands of some of the others, Hypertech was just the first one that came to mind.

merlin5577 Senior Enthusiast

merlin5577

Posted
Posted
Hi all

I am trying to find out if the speed limiter that cuts the power at 96 mph can be set lower. On one of the trucks at work, a 98 Suburban, we would like to set the high spped setting so the truck can't go more than 65mph. Is this possable?

 

Thanks!

 

Yup, just need to reprogram the ECM. Most hand held tuners have an option for this.

 

 

Is there a tuner you would recommend for this?

 

 

I would first check with your local dealer if they can do the reprogram it for you. I know on new vehicles this is an option so it shouldnt be a big deal for them to do it.

 

If you have a laptop I would get this;

 

http://www.jetchip.com/Shop/shopdisplaypro...h=yes&bc=no

 

Its a bit pricy but you can change any characteristic of the truck and tune multiple vehicles.

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