15 Tahoe won't go past 85MPH

[Unclehank47]

As of yesterday my 15 Tahoe LTZ will not go faster than 85mph. Feels like a governor is on it. Also when the left turn signal is on the interior light flashes. Weird weird weird! Recently had the front struts replaced from magride tp passive. Does anyone have a clue on this?

 

[DWTahoe]

Interior lights is a different known issue. Search for interior "disco lights" and you will find the part numbers and a pretty good details on how to fix it. It's a bad module in the over head console lights that affects all rows. If I find the thread, I'll add it.

As for the 85mph...my 15 doesn't have that issue. Good luck.

 

[singhnyc]

do you have suspension light on from the mag ride delete

 

[Unclehank47]

Suspension warning comes on at start up but I clear it.

 

[sealandsky]

Could it be that the driver controls were reset inadvertently to "teen driver" or "valet" mode?

 

[Oh Kee Pah]

I would suggest contacting a company called Xineering in Florida.
They sell a GM Shock Delete kit (I have this installed on my '15 Tahoe LTZ).
One of the email correspondences I had with the company mentioned an "84 mph speed limiter" may occur if the MRC delete circuits were not operating properly. I also remember them saying it was perfectly safe to drive, but the limiter may occur. I didn't have that happen so I never went further with that.

I'm sure a quick call to them will get you the answers you need!

 

[sealandsky]

As of yesterday my 15 Tahoe LTZ will not go faster than 85mph. Feels like a governor is on it. Also when the left turn signal is on the interior light flashes. Weird weird weird! Recently had the front struts replaced from magride tp passive. Does anyone have a clue on this?

I guess the elephant in the room is, why would you delete the MRC and revert to traditional shocks?

 

[Adam10532]

As of yesterday my 15 Tahoe LTZ will not go faster than 85mph. Feels like a governor is on it. Also when the left turn signal is on the interior light flashes. Weird weird weird! Recently had the front struts replaced from magride tp passive. Does anyone have a clue on this?

As of yesterday my 15 Tahoe LTZ will not go faster than 85mph. Feels like a governor is on it. Also when the left turn signal is on the interior light flashes. Weird weird weird! Recently had the front struts replaced from magride tp passive. Does anyone have a clue on this?

Yes it's definitely with your Magnetic Ride. Reach out to xineering in Florida someone else suggested it in a earlier post suggested it. They will send you USB cord that you can hook up to your OBD Inlet and you can correct this code and with your laptop and the application you can clear this code once and for all. I know each time you start your truck it says "service suspension". And as a safety feature you can't go over 85. I have done this from experience I reach out to xineering in Florida they sent me a cable that I was able to hook up to my yukon problem solved for me

 

[Unclehank47]

Yes it's definitely with your Magnetic Ride. Reach out to xineering in Florida someone else suggested it in a earlier post suggested it. They will send you USB cord that you can hook up to your OBD Inlet and you can correct this code and with your laptop and the application you can clear this code once and for all. I know each time you start your truck it says "service suspension". And as a safety feature you can't go over 85. I have done this from experience I reach out to xineering in Florida they sent me a cable that I was able to hook up to my yukon problem solved for me

Awesome reaching out asap!

 

[Oh Kee Pah]

I guess the elephant in the room is, why would you delete the MRC and revert to traditional shocks?

The MRC is going to FAIL - period.

Also, many owners complain of a harsh ride with the MRC.

My Tahoe's MRC front shocks went bad at 32k miles! Just under $2,000 at Chevy to get the OE replacement done. Crazy! I spent less $ on my MRC delete circuits and Fox shocks (awesome upgrade to front and back suspension). My Fox 2.0 front coilovers are also fully serviceable by the company and can be adjusted for increased ride height; or moved to another Tahoe/Suburban/Silverado if desired - all bonuses in my book.