The AMP Research Replacement OBD-II Module restores proper operation to AMP Research PowerStep running boards that are deploying intermittently due to a loose or damaged module connection in the Plug-N-Play wiring harness. It includes everything needed to repair the faulty module.
Specifications:
- Replacement OBD-II module for AMP Research Plug-N-Play PowerStep wiring harness
- Black
- Direct plug-in replacement, no splicing required
- Part Number: AMP19-03970-91
Vehicle Applications:
- 2014 Chevrolet Silverado 1500
- 2015 Chevrolet Silverado 1500
- 2016 Chevrolet Silverado 1500
- 2017 Chevrolet Silverado 1500
- 2018 Chevrolet Silverado 1500
- 2019 Chevrolet Silverado 1500 LD
- 2015 Chevrolet Silverado 2500 HD
- 2016 Chevrolet Silverado 2500 HD
- 2017 Chevrolet Silverado 2500 HD
- 2018 Chevrolet Silverado 2500 HD
- 2019 Chevrolet Silverado 2500 HD
- 2015 Chevrolet Silverado 3500 HD
- 2016 Chevrolet Silverado 3500 HD
- 2017 Chevrolet Silverado 3500 HD
- 2018 Chevrolet Silverado 3500 HD
- 2019 Chevrolet Silverado 3500 HD
- 2014 GMC Sierra 1500
- 2015 GMC Sierra 1500
- 2016 GMC Sierra 1500
- 2017 GMC Sierra 1500
- 2018 GMC Sierra 1500
- 2019 GMC Sierra 1500 Limited
- 2015 GMC Sierra 2500 HD
- 2016 GMC Sierra 2500 HD
- 2017 GMC Sierra 2500 HD
- 2018 GMC Sierra 2500 HD
- 2019 GMC Sierra 2500 HD
- 2015 GMC Sierra 3500 HD
- 2016 GMC Sierra 3500 HD
- 2017 GMC Sierra 3500 HD
- 2018 GMC Sierra 3500 HD
- 2019 GMC Sierra 3500 HD
FAQ
What does this module fix?
It replaces a loose or damaged OBD-II module in the AMP Research Plug-N-Play PowerStep wiring harness that causes intermittent step operation.
Is this a direct plug-in replacement?
Yes, it plugs directly into the existing Plug-N-Play harness with no splicing required.
What color is the module?
Black.
Which trucks does this fit?
It fits 2014-2019 Chevrolet Silverado and GMC Sierra 1500, 2500 HD, and 3500 HD models equipped with AMP Research Plug-N-Play PowerStep harnesses.

