Troubleshooting Curt Spectrum Brake Controller # C51170 in a 2021 Chevrolet Silverado 2500HD
Updated 09/23/2021 | Published 09/18/2021
Products Featured in This Question
Question:
I did not buy this part from you, but, you have a great wealth of information on all the things Ive researched so far. I do have a Power Watchdog Surge Protector from you. I installed a C51170 but received no calibration lights and it send a constant 12v to the braking pins. I wrote to Curt, who sent out a replacement directly. Ive installed the new one brain and knob to still receive no calibration lights, but, also no 12v to the braking pins. Have you come across this issue? Please feel free to ignore me if I am out of line here. Do you have any successful installs on this truck? What would be the best replacement for this unit of proven success? Thank you so much. Cheers.
asked by: Murray C
Helpful Expert Reply:
We have not yet been able to install a Brake Controller # C51170 on a 2021 Chevrolet Silverado 2500. The thing that I do not like to hear is when you replaced the controller your issues changed.
I would begin by checking the Curt Custom Wiring Adapter # C51525 for the ensure that it is receiving the correct power from your Silverado. You can use a Test Light # PTW2992 or Multimeter # PT29ZR to test the adapter wiring. With the ignition on you should have constant 12 volt power to the black wire and power on the red wire when you press the brake pedal. The white wire should have continuity to a 12 volt ground source. If you do not have power to these circuits then you may have a fuse or relay that is missing or needs replaced. There is also the possibility that the computer in your Silverado may need flashed from the manufacturer to allow power to these circuits.
Product Page this Question was Asked From
Curt Spectrum Trailer Brake Controller - Dash Mounted Knob - Up to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 4 Axles
- Indicator Lights
- Multiple Trailers
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung
- Shop: Timbren Suspension Enhancement System - Rear Axle
- Shop: Off Road Lights
- Shop: Vehicle Lights
- Shop: Trim Kits
- Shop: Suspension Enhancement
- Shop: Vehicle Cargo Control
- Shop: Vehicle Seat Covers
- Shop: Vehicle Air Mattress
- Shop: Curt Spectrum Brake Controller w/ Custom Harness - Dash Mounted Knob - Up to 4 Axles - Proportional
- Search Results: curt spectrum brake controller
- Q&A: Single Red LED Lights Up When Brakes Pressed on Curt Spectrum Trailer Brake Controller
- Q&A: Troubleshooting a Curt Spectrum That Does not Go Through Calibration Sequence
- Q&A: Curt Brake Controller Wiring Plug for a 2021 Chevy Silverado 1500
- Q&A: Parts Needed to Install Curt C49UR Assure Brake Controller on 2021 Chevy Silverado
- Q&A: Parts Needed To Install Curt Assure Trailer Brake Controller On a 2024 Chevy Silverado 2500
- Q&A: Will The Curt Spectrum Trailer Brake Controller C51170 Fit On a 2023 GMC Sierra 1500?
- Q&A: Can Curt Spectrum Brake Controller Bypass OEM Controller of 2020 Chevy Silverado 1500
- Search Results: rv fresh water tank
- Search Results: water tank
- Search Results: timbren gmrs15
- Shop: Ignik Backside Heated Seat Pad XL with 12V Adapter - 34" Long x 12" Wide
- Video: Installing the Timbren Suspension Enhancement System on your 2023 Chevrolet Silverado 1500
- Search Results: tank heaters
- Shop: etrailer Enclosed Trailer Transition Plate - Universal - 1,000 lbs - Qty 1
- Shop: Swift Hitch Wi-Fi Camera for Smartphone or Tablet - Wireless - Night Vision - 5-Hour Battery
- Shop: Curt Spectrum Trailer Brake Controller - Dash Mounted Knob - Up to 4 Axles - Proportional
- Video: Breaking Down the Swift Hitch Wi-Fi Camera for Smartphone or Tablet