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Forums59
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Dec 30th, 2023
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 Governor on 2021 Silverado
#14067362
07/20/21 01:06 AM
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Joined: Oct 2005
Posts: 1,144
waitinforabite
OP
Extreme Angler
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OP
Extreme Angler
Joined: Oct 2005
Posts: 1,144 |
I bought my truck last December and surprisingly it took until today on the toll road to discover the truck has a governor and will not exceed 98 mph. I had no idea. Luckily I wasn't in a high speed chase or passing on a 2 lane road. Is this easy to disable?
Jeremy
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067377
07/20/21 01:14 AM
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Joined: Jul 2007
Posts: 50,905
Trickster
Super Freak
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Super Freak
Joined: Jul 2007
Posts: 50,905 |
Mine is stuck on 69. And I like it.
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067396
07/20/21 01:27 AM
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Joined: Jun 2003
Posts: 31,283
HasBen
TFF Guru
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TFF Guru
Joined: Jun 2003
Posts: 31,283 |
I would imagine that the ECU can be flashed to eliminate the speed limiter. My experience with this is on a motorcycle, but is most likely similar in a truck.
"Nothing spoils a good story like the arrival of an eyewitness."-Mark Twain
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Re: Governor on 2021 Silverado
[Re: HasBen]
#14067400
07/20/21 01:34 AM
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Joined: Oct 2006
Posts: 95,538
Bigbob_FTW
Big Sprocket Bob
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Big Sprocket Bob
Joined: Oct 2006
Posts: 95,538 |
I would imagine that the ECU can be flashed to eliminate the speed limiter. My experience with this is on a motorcycle, but is most likely similar in a truck. Will void the warranty.
![[Linked Image]](https://texasfishingforum.com/forums/pics/usergals/2017/07/full-20284-169975-biyl8lail.jpg) ![[Linked Image]](https://texasfishingforum.com/forums/pics/usergals/2017/07/full-20284-169974-image_preview.jpg) FJB
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067468
07/20/21 02:31 AM
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Joined: Jun 2005
Posts: 12,958
DanDaBald
TFF Guru
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TFF Guru
Joined: Jun 2005
Posts: 12,958 |
I have seen rev limitations all across the board and from the unsubstantiated information I've gleaned there are several limitations
New vehicles are set 5mph UNDER the speed rating of the OEM tires. (This was verified by me on my '02 RAM on the Kansas not-so-freeway at right around 110mph)
Danged carpy tires . . . .
 NEVER FORGET 9/11/2001
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067475
07/20/21 02:37 AM
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Joined: May 2003
Posts: 16,316
Chris B
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 16,316 |
My 96 GMC shut off at 98. I'm not sure where the governor was on my 05 Silverado. Had it over 100 several times.
![[Linked Image]](https://texasfishingforum.com/forums/pics/usergals/2017/07/full-3769-170037-image.png) I hate photobucket.
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067496
07/20/21 03:04 AM
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Joined: Jan 2006
Posts: 14,091
BassFever
TFF Guru
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TFF Guru
Joined: Jan 2006
Posts: 14,091 |
My 14,15 and 17 Silverado's all maxed out @98. Pretty scary the first time it happened. Thought I blew the engine.
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067499
07/20/21 03:10 AM
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Joined: Oct 2004
Posts: 1,537
Cmack
Extreme Angler
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Extreme Angler
Joined: Oct 2004
Posts: 1,537 |
My 2019 GMC craps out at 112 mph, which coincides with the speed rating of the tires.
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067574
07/20/21 06:44 AM
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Joined: Mar 2021
Posts: 665
Sailor1180
Pro Angler
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Pro Angler
Joined: Mar 2021
Posts: 665 |
I got a 96 chevy truck.
Does the same thing.
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Re: Governor on 2021 Silverado
[Re: HasBen]
#14067583
07/20/21 08:21 AM
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Joined: Sep 2008
Posts: 121,172
hopalong
Pescador Loco
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Pescador Loco
Joined: Sep 2008
Posts: 121,172 |
I would imagine that the ECU can be flashed to eliminate the speed limiter. My experience with this is on a motorcycle, but is most likely similar in a truck. my superchips tuner will change the speed limiter
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067912
07/20/21 03:28 PM
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Joined: Sep 2016
Posts: 9,444
Floon Swenson
TFF Celebrity
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TFF Celebrity
Joined: Sep 2016
Posts: 9,444 |
I had no idea so many people were driving their pickups around at 100mph.
It inspires me to do more.
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Re: Governor on 2021 Silverado
[Re: waitinforabite]
#14067934
07/20/21 03:46 PM
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Joined: Jun 2003
Posts: 31,283
HasBen
TFF Guru
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TFF Guru
Joined: Jun 2003
Posts: 31,283 |
A $70K pickup should be able to go faster than 98mph.
"Nothing spoils a good story like the arrival of an eyewitness."-Mark Twain
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Re: Governor on 2021 Silverado
[Re: HasBen]
#14067939
07/20/21 03:50 PM
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Joined: Oct 2005
Posts: 1,144
waitinforabite
OP
Extreme Angler
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OP
Extreme Angler
Joined: Oct 2005
Posts: 1,144 |
Agree-I can think of some life and death scenarios where this speed restriction could be a problem. Do not recall this being mentioned in the sales process.
Jeremy
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Re: Governor on 2021 Silverado
[Re: HasBen]
#14067973
07/20/21 04:34 PM
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Joined: Oct 2006
Posts: 95,538
Bigbob_FTW
Big Sprocket Bob
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Big Sprocket Bob
Joined: Oct 2006
Posts: 95,538 |
A $70K pickup should be able to go faster than 98mph. it can. your tires can't.
FJB
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