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Speed Limiter

Scooby1974
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Scooby1974 Enthusiast

Scooby1974

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Posted

Hello, I have a 2019 GMC sierra 1500 SLT 5.3l. When I bought the truck would go up to 105 mph. After a while the truck hits only 98mph. Does anyone know how this happened?

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CamGTP
CamGTP

Since when do you need to pass someone doing 30 over the limit?   I can two lane pass someone doing 10 over pretty easy lol. Maybe it just really gets to people that they can't get to their

Grumpy Bear
Grumpy Bear

I lived in Texas a decade. I've traveled your roads.    Talladega's back straight is 4,000 feet long. A car traveling 200 mph is coving that distance at 293.3333 feet per second taking 13.64

KARNUT
KARNUT

I love reading post from people who have no idea how long and smooth Texas roads are. Snow belt and east coast roads can’t compare. I lived in both. In the 40 years I lived in Texas I never needed a f

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Beats me but more than half of the trucks will have a 98mph limiter based on the tires it came equipped with.

 

Big deal if you can't go 7mph faster now.

Scooby1974 Enthusiast

Scooby1974

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4 minutes ago, CamGTP said:

Beats me but more than half of the trucks will have a 98mph limiter based on the tires it came equipped with.

 

Big deal if you can't go 7mph faster now.

The thing is that this truck went down on the limited from 105 to 98. From 98 to 105 is a big difference especially when passing. 

newdude Senior Enthusiast

newdude

Posted
Posted
9 hours ago, Scooby1974 said:

Hello, I have a 2019 GMC sierra 1500 SLT 5.3l. When I bought the truck would go up to 105 mph. After a while the truck hits only 98mph. Does anyone know how this happened?

 

 

Have you installed different size tires?

Scooby1974 Enthusiast

Scooby1974

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Posted

The idiot is the one doing 65 on a 75 holding back two semies , a minivan and a SUV on a two lane country road.

You must be the Idiot who does this same crap!!!

Give me your address so I can send you $5 so you can get a pair!!!

 

BossTaco2020 Enthusiast

BossTaco2020

Posted
Posted
1 minute ago, Scooby1974 said:

The idiot is the one doing 65 on a 75 holding back two semies , a minivan and a SUV on a two lane country road.

You must be the Idiot who does this same crap!!!

Give me your address so I can send you $5 so you can get a pair!!!

 

There's a 75mph speed limit on a two lane country road?!?!? Not sure who the idiot is here, the one who created speed limit or the idiots driving that fast on a country road. Only speed limit above 70mph I've seen in the US are on interstates. But you do you Bubba and keep your $5, I don't want you fondling my balls.

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Scooby1974 Enthusiast

Scooby1974

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In Texas we have those two lane roads ( better built than a lot of highways) with passing lanes every 4 miles. No cows, goats etc.

Oh! I think a $5 pair of balls will probably fit you small!

I will send you $10.

Originally I asked a question to see if anyone had had this same issue so if you don't have good feedback , keep it shut and Keep strolling!

Good Day!!

RedLT Enthusiast

RedLT

Posted
Posted

Mine never changed but the first time that I did hit the speed limiter it was during passing a vehicle and I was scared "ball-less 😬" hitting that speed.

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Scooby1974 Enthusiast

Scooby1974

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I got you!

I mean I don't drive crazy but being on the road for many years now, sometimes I Need that extra push.

I also understand that pickup trucks are not built for high speeds (driveshaft might give out) but sometimes in my experience I have to floor it!.

It boggles me because like I said, for the first year it did 105 all stock. Now it went down to 98. 

I have CAI, catch can and a magnaflow muffler. Not looking to tune it, its my highway driver.

Thanks for your feedback👍

richard wysong Senior Enthusiast

richard wysong

Posted
Posted

Death wish doing 100 on any road, things happen faster than you can react, you have to be driving 1/4 mile in front of where you are, easy on a race track, not so easy with the nitwits on the road these days. To answer your question other than changing the tires or gear ratio there shouldn't be anything that would affect the limiter. I wonder if the Onstar may have done it? you said same size tires but not the same tires? there can be big differences in the circumference of different brands of tires

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Scooby1974 Enthusiast

Scooby1974

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The truck came from factory 20" wheels on 275/60/R 20  Bridgestone Alanza tires. 800 miles ago I replaced all 4 tires with same size, brand tires( except the new tires are Alanza Plus) which are rated for higher speeds which that was not the reason I went with the plus tires. I got those because of the 80k warranty they have and work very well on wet conditions.

OnStar🤔?

Might need to look into that!

Thanks for your feedback👍

 

By the way guys, I have a track car and a 9 sec quarter car so do not think I want to make my truck fast especially a crew cab.

Thanks

 

RedLT Enthusiast

RedLT

Posted
Posted
5 minutes ago, Scooby1974 said:

The truck came from factory 20" wheels on 275/60/R 20  Bridgestone Alanza tires. 800 miles ago I replaced all 4 tires with same size, brand tires( except the new tires are Alanza Plus) which are rated for higher speeds which that was not the reason I went with the plus tires. I got those because of the 80k warranty they have and work very well on wet conditions.

OnStar🤔?

Might need to look into that!

Thanks for your feedback👍

 

By the way guys, I have a track car and a 9 sec quarter car so do not think I want to make my truck fast especially a crew cab.

Thanks

 

 

Glad you posted the exact specs, I had the exact size and brand that came with the truck when bought new but my speed limiter was at 98mph.  I've read multiple threads and it seems 98 are set for this wheel/tire specification.  So...maybe your truck was "mis-programmed" and maybe you got a recent OTA update and it got flashed to match the true spec of the truck.

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