My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

AMP Research 19-04270-90 PowerStep Replacement Wire Harness - With Connector

(Chevrolet Silverado 1500 1999-2020, Silverado 1500 HD 2001-03, 2005-06, Suburban 1500 2001-14, Silverado 2500 HD 2001-19, Tahoe 2001-14 + 54 more models)

Part of: AMP Research PowerStep Replacement Wire Harness

Other options in this family: AMP Research 19-04064-91 AMP Research 19-04519-92L AMP Research 19-04725-97L AMP Research 19-03473-97L AMP Research 19-04630-92L

Manufacturer

Picture for manufacturer AMP Research

Part Number

19-04270-90
9 reviews
Sale Price

$43.37

3 left at this price

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The AMP Research 19-04270-90 is an OEM replacement wire harness designed for AMP Research PowerStep™ automatic electric running boards. This black harness includes the connector and provides the critical electrical link between the vehicle's door-ajar circuit and the PowerStep control module, enabling the steps to automatically extend when a door is opened and retract when the doors are closed.

PowerStep wire harnesses are vehicle-specific components, meaning this harness is engineered to match the wiring configuration of a specific vehicle make, model, and PowerStep series. Using the correct harness ensures proper signal communication, reliable step deployment, and safe operation of the PowerStep system.

Key Features:

  • OEM AMP Research replacement wire harness — maintains factory PowerStep performance
  • Includes connector for direct, secure integration with the PowerStep control module
  • Black finish matches the PowerStep system's existing wiring components
  • Vehicle-specific design ensures compatibility with the correct PowerStep series
  • Restores proper automatic extend/retract functionality to the PowerStep system

This harness is the correct OEM replacement part for restoring or repairing an existing AMP Research PowerStep™ installation. Always verify the harness is matched to the correct vehicle and PowerStep model series prior to installation. AMP Research manufacturer part number: 19-04270-90.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2020, Silverado 1500 HD 2001-03, 2005-06, Suburban 1500 2001-14, Silverado 2500 HD 2001-19, Tahoe 2001-14, Avalanche 1500 2003-06, Avalanche 2007-13, Silverado 3500 HD 2007-19, Silverado 2500 1999-2004 + 50 more models

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Very easy to order. Shipping was on time and product is exactly what I ordered. Overall very satisfied

Fast shipping A+

Great company and fast shipping

Great price, fast shipping, they have stock levels updated in their website.

all good on price and ordering

First class experience. Great price and only ultra fast shipping

Simple transaction

I ordered a tire from thmotorsports that the manufacturer had discontinued two years earlier and which I could not find anywhere else, without checking customer reviews first, something I never do. Had I checked reviews first I would never have placed the order as the reviews I read after placing my order were uniformly awful. But rather than call and cancel the order, which was my first impulse, I resisted the urge to do so and waited. A day later, the shipping update said my tire had shipped, so I waited. Another day later, the shipping update said my tire would arrive a day later by the end of the day so I waited. On the appointed day, the tire, exactly the tire I had ordered and which was unavailable anywhere else, arrived at the end of the day, brand new, in perfect condition and I was utterly amazed. Thank you, thmotorsports, I am so glad I did not look at your reviews before placing my order.

Great experience. Easy, quick, great price

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy