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GM Genuine Parts Automatic Transmission Wiring Harness
OE

GM Genuine Parts Automatic Transmission Wiring Harness

GM Part #29545307

ACDelco Part #29545307

MSRP$168.08*

GM Genuine Parts Automatic Transmission Wiring Harnesses are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Durable outer coverings help shield and protect against tough conditions, vibration, abrasions, and moisture
  • Wires are color coded correctly for easy installation
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

About this product

GM Genuine Parts Automatic Transmission Wiring Harnesses are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These harnesses protect wires and help secure them against the adverse effects of vibration, abrasions, and moisture. Wire harnesses also optimize the usage of space, helping reduce the risk of shorts. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

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  • Durable outer coverings help shield and protect against tough conditions, vibration, abrasions, and moisture
  • Wires are color coded correctly for easy installation
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Length9.75in
Connector Quantity9
ClassificationOE

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Good Maintenance Practices:

  • Before purchasing and installing an automatic transmission wiring harness, make sure it is the correct size and fit for your vehicle.
  • Keep wire harness secure and free from contact wear.
  • Keep harness connecting plugs free from dirt and debris.
  • Regularly inspect wiring harness for signs of damage or wear, and replace it if signs of damage are found.

Signs of wear for automatic transmission wiring harness include but are not limited to:

  • Broken or spliced wires
  • Decrease in voltage
  • Breaks or cracks in insulation jacket or outer coating of the wires
  • Lack of communication between vehicle control units and transmission
  • Vehicle not moving or engaging gears
  • Illuminated Check Engine Light

ModelBody StyleTrimYear(s)
Silverado 2500 HD2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Silverado 3500 HD2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019

Frequently Asked Questions

No. Harness connections and wiring may vary with different transmissions. Consult vehicle information for the harness that fits your application.

Yes. Your vehicle's Check Engine Light may illuminate for several reasons, and one potential cause is a malfunctioning wire harness.