Dash Mounted Brake Controller For 2004 GMC Sierra 2500HD
Updated 09/05/2026 | Published 09/01/2026
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Question:
I need a trailer brake controller for a 2004 Gmc sierra 2500 hd. I am looking for an in dash mount. Can you please recommend something?
asked by: Rob F
Expert Reply:
Hey Rob, thanks for reaching out. Yes, we do have dash-mounted brake controller options for your 2004 GMC Sierra 2500HD. If you want a standard controller that mounts on the dash, I recommend the following:
- Curt TriFlex NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional # C86SV
This is a fully proportional controller, so you get smooth trailer braking that is perfectly synced with the vehicle's brakes. The controller mounts on the dash and installs using the included custom pigtail.
Or if you are looking for something that installed behind the dash, use the following:
- Curt Spectrum Brake Controller w/ Custom Harness - Dash Mounted Knob - Up to 4 Axles - Proportional # C24SV
This controller installs hidden behind the dahs, so all you see on the dash is the LED control knob. This also comes with a custom pigtail for a plug and play install. So as long as your truck has the factory 7-way, it'll be a plug and play install.
Your truck does have the factory 7-way correct? What kind of trailer will you be hauling?
(click to enlarge)
Carl M.
9/5/2026
New upgraded e-brake works great.
Product Page this Question was Asked From
Curt TriFlex NEXT Trailer Brake Controller w/ Custom Harness - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Under-Dash Box
- Under-Dash
- Up to 4 Axles
- LCD Display
- Single Trailer Only
- CURT
more information >
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Rudolph
9/5/2026
I have the curt triflex in my 2005 gmc 2500hd it was a plug and play i pull a 15000 lbs 2 axle trailer and it works very good.