What is this?

[James Mead]

I have taken delivery of my 2021 Sierra 1500 SLE. It's used and has this rotary knob/switch installed. It lights up in different colors when pressed and illuminates all or only a few LEDs when rotated. Any guess?

 

James

[bdallas]

Trailer brake controller.

[newdude]

Brake controller.  More specifically, the Curt Mfg Spectrum series controller - Spectrum Trailer Brake Controller SKU #51170 for $250.58 by CURT Manufacturing (curtmfg.com)

 

More than likely was installed at the dealer because of the factory trailer brake controller shortage/constraint on these trucks that has been on and off the past year or so.  Its sold via GM dealers under part #19418031 and comes with a plug and play factory fit harness to power it.  

 

Here is the link from GM's accessory sites - Spectrum™ Brake Controller Module by CURT™ Group- Associated Accessories | GMC Accessories

Edited March 2, 2022 by newdude

[James Mead]

Thanks guys. Never seen one that small.

[luke1333]

1 hour ago, James Mead said:

Thanks guys. Never seen one that small.

thats what she said LOL

[Rob Mugs]

5 hours ago, James Mead said:

Thanks guys. Never seen one that small.

That's what she said?

 

Dammit.. missed the fact I was beat by 4 hours.  No option to delete  

Edited March 3, 2022 by Rob Mugs

[Shaun F]

So, not to hi-jack this thread, but I'm curious if this can be installed after the vehicle was sold?  Is there any programming needed?  I have a 2022 1500 GMC Sierra Limited Elevation (Not the refresh model) with no trailer brake option.

 

S

[James Mead]

9 hours ago, Rob Mugs said:

That's what she said?

 

Dammit.. missed the fact I was beat by 4 hours.  No option to delete  

I thought that immediately after i posted it

[redwngr]

20 hours ago, Shaun F said:

So, not to hi-jack this thread, but I'm curious if this can be installed after the vehicle was sold?  Is there any programming needed?  I have a 2022 1500 GMC Sierra Limited Elevation (Not the refresh model) with no trailer brake option.

 

S

The factory one doesn't look like that.

 

That is the accessory one -- and it's available because the factory one can't be retro-fit. 

 

Newdude posted a link to the page that shows it at GM Accessories. 

 

It's made and warrantied by Curt