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Dorman 645-170 Trailer Tow Harness ConnectorOE Quality 60-Day Returns
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Part #: 645-170

Dorman 645-170 Trailer Tow Harness Connector

⚙️ 72 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$34.12Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
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*Free return shipping only qualifies if our fitment verification tool is used.
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Canyon, Colorado, Envoy, Envoy XL, Equinox, Express 1500, Express 2500, Express 3500, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 Limited, Sierra 2500 HD, Sierra 3500 HD, Silverado 1500, Silverado 1500 LD, Silverado 2500 HD, Silverado 3500 HD, Terrain, Trailblazer, Trailblazer EXT, Yukon, and Yukon XL
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Dorman 645-170 Trailer Tow Harness Connector
BrandDorman
Part Number645-170
ColorAmarillo
ColorAzul
ColorBlack
ColorBlue
ColorGray
ColorGris
ColorNegro
ColorRed
ColorRojo
ColorYellow
GenderFemale
GenderHembra
Wiring Harness Length16
Wire Gauge Measurement10
Wire Gauge Measurement12
Wire Gauge Measurement16
Wire Gauge Measurement18
Terminal TypeAspa
Terminal TypeBlade
ShapeCircle
ShapeCírculo
Wire Quantity7
Terminal Quantity7
Terminal GenderFemale
Terminal GenderHembra
Contenidos del paquete1 empalme
Contenidos del paquete7 conectores de presión
Package Contents1 pigtail
Package Contents7 butt connectors

This part fits 72 vehicles. Search below:

YearMakeModelPositionNotes
2021ChevroletColoradoN/A7 Way Female w/Leads
2021ChevroletSilverado 1500N/A7 Way Female w/Leads
2021ChevroletSilverado 2500 HDN/A7 Way Female w/Leads
2021ChevroletSilverado 3500 HDN/A7 Way Female w/Leads
2021GMCCanyonN/A7 Way Female w/Leads
2021GMCSierra 1500N/A7 Way Female w/Leads
2021GMCSierra 2500 HDN/A7 Way Female w/Leads
2021GMCSierra 3500 HDN/A7 Way Female w/Leads
2021GMCYukonN/A7 Way Female w/Leads
2021GMCYukon XLN/A7 Way Female w/Leads
2020ChevroletColoradoN/A7 Way Female w/Leads
2020ChevroletEquinoxN/A7 Way Female w/Leads
2020ChevroletSilverado 1500N/A7 Way Female w/Leads
2020ChevroletSilverado 2500 HDN/A7 Way Female w/Leads
2020ChevroletSilverado 3500 HDN/A7 Way Female w/Leads
2020GMCCanyonN/A7 Way Female w/Leads
2020GMCSierra 1500N/A7 Way Female w/Leads
2020GMCSierra 2500 HDN/A7 Way Female w/Leads
2020GMCSierra 3500 HDN/A7 Way Female w/Leads
2020GMCTerrainN/A7 Way Female w/Leads
2020GMCYukonN/A7 Way Female w/Leads
2020GMCYukon XLN/A7 Way Female w/Leads
2019ChevroletColoradoN/A7 Way Female w/Leads
2019ChevroletEquinoxN/A7 Way Female w/Leads
2019ChevroletSilverado 1500N/A7 Way Female w/Leads
2019ChevroletSilverado 1500 LDN/A7 Way Female w/Leads
2019ChevroletSilverado 2500 HDN/A7 Way Female w/Leads
2019ChevroletSilverado 3500 HDN/A7 Way Female w/Leads
2019GMCCanyonN/A7 Way Female w/Leads
2019GMCSierra 1500N/A7 Way Female w/Leads
2019GMCSierra 1500 LimitedN/A7 Way Female w/Leads
2019GMCSierra 2500 HDN/A7 Way Female w/Leads
2019GMCSierra 3500 HDN/A7 Way Female w/Leads
2019GMCTerrainN/A7 Way Female w/Leads
2019GMCYukonN/A7 Way Female w/Leads
2019GMCYukon XLN/A7 Way Female w/Leads
2018ChevroletSilverado 1500N/A7 Way Female w/Leads
2018ChevroletSilverado 2500 HDN/A7 Way Female w/Leads
2018ChevroletSilverado 3500 HDN/A7 Way Female w/Leads
2018GMCSierra 1500N/A7 Way Female w/Leads
2018GMCSierra 2500 HDN/A7 Way Female w/Leads
2018GMCSierra 3500 HDN/A7 Way Female w/Leads
2018GMCYukonN/A7 Way Female w/Leads
2018GMCYukon XLN/A7 Way Female w/Leads
2016ChevroletExpress 2500N/A7 Way Female w/Leads
2016ChevroletExpress 3500N/A7 Way Female w/Leads
2016GMCSavana 2500N/A7 Way Female w/Leads
2016GMCSavana 3500N/A7 Way Female w/Leads
2015ChevroletExpress 2500N/A7 Way Female w/Leads
2015ChevroletExpress 3500N/A7 Way Female w/Leads
2015GMCSavana 2500N/A7 Way Female w/Leads
2015GMCSavana 3500N/A7 Way Female w/Leads
2014ChevroletExpress 1500N/A7 Way Female w/Leads
2014ChevroletExpress 2500N/A7 Way Female w/Leads
2014ChevroletExpress 3500N/A7 Way Female w/Leads
2014GMCSavana 1500N/A7 Way Female w/Leads
2014GMCSavana 2500N/A7 Way Female w/Leads
2014GMCSavana 3500N/A7 Way Female w/Leads
2013ChevroletExpress 1500N/A7 Way Female w/Leads
2013ChevroletExpress 2500N/A7 Way Female w/Leads
2013ChevroletExpress 3500N/A7 Way Female w/Leads
2013GMCSavana 1500N/A7 Way Female w/Leads
2013GMCSavana 2500N/A7 Way Female w/Leads
2013GMCSavana 3500N/A7 Way Female w/Leads
2004ChevroletTrailblazerN/A7 Way Female w/Leads
2004ChevroletTrailblazer EXTN/A7 Way Female w/Leads
2004GMCEnvoyN/A7 Way Female w/Leads
2004GMCEnvoy XLN/A7 Way Female w/Leads
2003ChevroletTrailblazerN/A7 Way Female w/Leads
2003ChevroletTrailblazer EXTN/A7 Way Female w/Leads
2003GMCEnvoyN/A7 Way Female w/Leads
2003GMCEnvoy XLN/A7 Way Female w/Leads

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

15306164S1344

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.