7 Way Trailer Wiring Harness 4 Way Flat Connector Kit for Chevy Silverado 1500 (2003-2018)

$39.42
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Details

Intro Section

  • 7 Way Trailer Wiring Harness fixes missing trailer light output.
  • Fits for Chevy Silverado 1500 and 2500 HD with factory USCAR socket.
  • 2 outputs provide RV blade 7 way and 4 way flat trailer connections.
  • Review fitment and installation details before ordering this connector kit.
Brand Model Year Engine Model
Chevy Avalanche 1500 2002-2006 Factory USCAR socket
Chevy Silverado 1500 2003-2018 Factory USCAR socket
Chevy Silverado 2500 HD 2001-2019 Factory USCAR socket
Chevy Silverado 3500 HD 2007-2019 Factory USCAR socket
Chevy Express 1500 2500 3500 2008-2017 Factory USCAR socket
Chevy Colorado 2008-2019 Factory USCAR socket
Chevy Tahoe Suburban Trailblazer Traverse 2000-2014 Factory USCAR socket

✅ Exact Fitment Guarantee | If you are unsure about compatibility, contact us at service@egrperformance.com with your VIN.

Shipping Details

Ontario CA / Springdale OH / Newark NJ

Package List

Complete Package Contents

  • Quantity 1:Dual output 7 way and 4 way trailer wiring socket.
  • Quantity 1:Integrated spring loaded 7 pin dust cover.
  • Quantity 1:Metal trailer connector mounting bracket.
Delivery Time

2-5 working days inland in the United States

Product details

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Product Overview

  • Product type:7 way and 4 way flat trailer wire harness plug.
  • Function:links trailer lights, brakes, reverse lights and aux power.
  • Connection:plugs into the existing factory USCAR socket.
  • Housing:black plastic construction resists rust and corrosion.
  • Protection:spring loaded 7 pin dust cover protects terminals.

Ideal For

  • Towing upgrade:Solve missing 7 way RV blade trailer output.
  • Utility trailer use:Solve missing 4 way flat light connection.
  • Socket replacement:Solve cracked or corroded trailer plug housing.
  • Hitch wiring service:Solve unsecured rear trailer connector mounting.

Technical Specifications

  • Brand:EGR Performance.
  • Type:7 way and 4 way flat trailer wire harness plug.
  • Connector outputs:7 way RV blade socket and 4 way flat socket.
  • Vehicle interface:industry standard USCAR socket.
  • Material:plastic housing with metal mounting bracket.
  • Color:black.
  • Fitment type:direct replacement.
  • Warranty:1 Year Limited Warranty against manufacturing defects.

Why Choose EGR Performance

  • Fitment Support:Solve connector uncertainty with VIN checking.
  • Warranty Coverage:Solve defect concerns with 1 Year Limited Warranty.
  • US Support:Solve install questions by email support access.
  • Clear Specs:Solve wrong part risk with 2 exact trailer outputs listed.

Installation Information

Installation Difficulty Level

Easy

Estimated Installation Time

0.3-0.8 hours

Required Tools

  • Socket wrench for bracket mounting.
  • Screwdriver for basic fastener service.
  • Trim tool if rear access panel removal is needed.
  • Work gloves for connector handling.

Step-by-Step Installation Overview

  • Confirm the vehicle has a factory USCAR socket.
  • Disconnect the old rear trailer connector.
  • Plug this connector into the factory USCAR socket.
  • Secure the metal bracket to the hitch area.
  • Test 7 way and 4 way trailer lighting functions.

No printed instructions included. Professional installation is highly recommended. For technical support, contact service@egrperformance.com.

Troubleshooting and Problem Solving

Common Issues After Installation

  • No trailer lights:USCAR plug not fully seated.
  • Weak signal:trailer side connector has dirty terminals.
  • 7 way no output:vehicle tow wiring or fuse needs inspection.
  • Loose connector:bracket fasteners are not tightened.

Error Code Solutions

  • No dedicated DTC:Inspect connector seating and trailer wiring first.
  • Trailer brake warning:Check vehicle fuse and 7 way brake circuit.
  • Lamp warning:Test trailer bulbs and 4 way flat ground path.

How to Reset Check Engine Light After Installation

  • Verify no engine related connector was disturbed.
  • Repair any vehicle side electrical fault first.
  • Use a scan tool to clear stored vehicle codes.
  • Road test and confirm the warning does not return.

What to Do If Your Vehicle Loses Power After Installation

  • Stop driving and inspect the battery and main fuses.
  • Unplug the trailer connector and retest the vehicle.
  • Check for pinched wiring near the hitch area.
  • Contact service@egrperformance.com with your VIN.

Core Advantages

  • Dual Output:2 socket formats support 7 way and 4 way trailers.
  • USCAR Interface:1 factory style plug supports plug and play install.
  • Terminal Protection:1 spring loaded dust cover shields 7 pin contacts.
  • Mounting Support:1 metal bracket secures the connector near the hitch.

Complete Package Contents

  • Quantity 1:Dual output 7 way and 4 way trailer wiring socket.
  • Quantity 1:Integrated spring loaded 7 pin dust cover.
  • Quantity 1:Metal trailer connector mounting bracket.

Long-Term Maintenance Tips

  • Dust Cover:inspect every 3 months and close after towing.
  • Terminals:inspect every 6 months and remove visible dirt.
  • Bracket:inspect every 6 months and tighten loose fasteners.
  • Trailer Test:test before each tow to prevent light failure.

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Vehicle Fitment

  • Fits for Chevy Avalanche 1500, 2002-2006, factory USCAR socket.
  • Fits for Chevy Avalanche 2500, 2002-2006, factory USCAR socket.
  • Fits for Chevy Avalanche, 2007-2013, factory USCAR socket.
  • Fits for Chevy Silverado 1500, 2003-2018, factory USCAR socket.
  • Fits for Chevy Silverado 1500 Classic, 2007, factory USCAR socket.
  • Fits for Chevy Silverado 1500 HD, 2003-2006, factory USCAR socket.
  • Fits for Chevy Silverado 1500 HD Classic, 2007, factory USCAR socket.
  • Fits for Chevy Silverado 1500 LD, 2019, factory USCAR socket.
  • Fits for Chevy Silverado 2500, 1999-2004, factory USCAR socket.
  • Fits for Chevy Silverado 2500 HD, 2001-2019, factory USCAR socket.
  • Fits for Chevy Silverado 3500, 2001-2006, factory USCAR socket.
  • Fits for Chevy Silverado 3500 Classic, 2007, factory USCAR socket.
  • Fits for Chevy Silverado 3500 HD, 2007-2019, factory USCAR socket.
  • Fits for Chevy Express 1500, 2008-2014, factory USCAR socket.
  • Fits for Chevy Express 2500, 2008-2017, factory USCAR socket.
  • Fits for Chevy Express 3500, 2015-2017, factory USCAR socket.
  • Fits for Chevy Colorado, 2008-2019, factory USCAR socket.
  • Fits for Chevy Traverse, 2010-2012, factory USCAR socket.
  • Fits for Chevy Tahoe, 2000-2006, factory USCAR socket.
  • Fits for Chevy Suburban 1500, 2000-2014, factory USCAR socket.
  • Fits for Chevy Suburban 2500, 2000-2013, factory USCAR socket.
  • Fits for Chevy Trailblazer, 2002-2009, factory USCAR socket.
  • Not confirmed for vehicles without factory USCAR trailer wiring socket.
  • Verify the rear connector before buying or email your VIN for fitment help.
  1. Dispatch Time: Orders will be shipped within 24 hours after successful payment.
  2. Delivery Time: 2-5 business days after dispatch (delivery speed depends on proximity to warehouse location).
  3. Return Window:7 days for unsatisfactory items45 days for quality-related issues
  4. Refund Processing: Refunds will be processed back to your original payment method within 2-4 business days after receiving the automated refund confirmation email (subject to bank verification).

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Will this fit my Chevy Silverado 1500?

It fits for Chevy Silverado 1500 from 2003-2018 with a factory USCAR socket.

Does this include both 7 way and 4 way outputs?

Yes. The connector has 1 RV blade 7 way socket and 1 4 way flat socket.

Do I need to splice wires for installation?

No splicing is listed. It plugs into the existing factory USCAR socket.

Does this work without a factory USCAR socket?

No. Compatibility requires the vehicle to have the factory USCAR socket.

Can it connect trailer brake lights and turn signals?

Yes. It connects trailer taillights, brake lights and turn signals.

Can it support electric trailer brakes?

The 7 way socket supports the electric trailer brake circuit when equipped.

Is a dust cover included?

Yes. The 7 pin socket includes a spring loaded dust cover.

What material is the housing?

The connector housing is black plastic.

Is a mounting bracket included?

Yes. The kit includes 1 metal mounting bracket for the hitch area.

Will this fit for Chevy Silverado 2500 HD?

It fits for Chevy Silverado 2500 HD from 2001-2019 with factory USCAR socket.

Will this fit for Chevy Colorado?

It fits for Chevy Colorado from 2008-2019 with factory USCAR socket.

Will this fit for Chevy Tahoe or Suburban?

It fits listed Tahoe and Suburban applications with factory USCAR socket.

Are printed instructions included?

No printed instructions are included. Professional installation is recommended.

How do I verify fitment before ordering?

Check the connector behind your vehicle or email your VIN to support.

What warranty is included?

EGR Performance provides 1 Year Limited Warranty against manufacturing defects.