# Fleece Performance 01-19 GM 2500/3500 Allison LCT/GM 4T65-E Internal Wire Harn Connector & Seal

Get rid of oil leaks from the harness connector with our replacement internal wiring harness seal for the Allison LCT and GM 4T65-E. This 20-way pin seal is a direct replacement for the hard to find OE seals and includes a replacement O-ring for the connector body and new connector body. FITMENT Allison LCT1000 (MY2001-2019) Allison LCT2000 GM 4T65-E Fits OE internal harness P/N's: 29545307, 29541371, 29539792, 29543336

This Part Fits:

Year

Make

Model

Submodel

2001-2005

Chevrolet

Silverado 2500 HD

Base

2015-2019

Chevrolet

Silverado 2500 HD

High Country

2001-2006

Chevrolet

Silverado 2500 HD

LS

2001-2019

Chevrolet

Silverado 2500 HD

LT

2007-2019

Chevrolet

Silverado 2500 HD

LTZ

2004-2019

Chevrolet

Silverado 2500 HD

WT

2007

Chevrolet

Silverado 2500 HD Classic

LS

2007

Chevrolet

Silverado 2500 HD Classic

LT

2007

Chevrolet

Silverado 2500 HD Classic

WT

2001-2005

Chevrolet

Silverado 3500

Base

2001-2006

Chevrolet

Silverado 3500

LS

2001-2006

Chevrolet

Silverado 3500

LT

2004,2006

Chevrolet

Silverado 3500

WT

2007

Chevrolet

Silverado 3500 Classic

LS

2007

Chevrolet

Silverado 3500 Classic

LT

2007

Chevrolet

Silverado 3500 Classic

WT

2015-2019

Chevrolet

Silverado 3500 HD

High Country

2007-2019

Chevrolet

Silverado 3500 HD

LT

2007-2019

Chevrolet

Silverado 3500 HD

LTZ

2007-2019

Chevrolet

Silverado 3500 HD

WT

2002-2005,2015-2019

GMC

Sierra 2500 HD

Base

2011-2019

GMC

Sierra 2500 HD

Denali

2001-2002,2006

GMC

Sierra 2500 HD

SL

2001-2019

GMC

Sierra 2500 HD

SLE

2001-2019

GMC

Sierra 2500 HD

SLT

2003-2014

GMC

Sierra 2500 HD

WT

2007

GMC

Sierra 2500 HD Classic

SL

2007

GMC

Sierra 2500 HD Classic

SLE

2007

GMC

Sierra 2500 HD Classic

SLT

2007

GMC

Sierra 2500 HD Classic

WT

2002-2005

GMC

Sierra 3500

Base

2001-2002,2006

GMC

Sierra 3500

SL

2001-2006

GMC

Sierra 3500

SLE

2001-2006

GMC

Sierra 3500

SLT

2004-2006

GMC

Sierra 3500

WT

2007

GMC

Sierra 3500 Classic

SL

2007

GMC

Sierra 3500 Classic

SLE

2007

GMC

Sierra 3500 Classic

SLT

2007

GMC

Sierra 3500 Classic

WT

2015-2019

GMC

Sierra 3500 HD

Base

2011-2019

GMC

Sierra 3500 HD

Denali

2007-2019

GMC

Sierra 3500 HD

SLE

2007-2019

GMC

Sierra 3500 HD

SLT

2007-2014

GMC

Sierra 3500 HD

WT

## Details

- **Price:** 54.44 CAD
- **Vendor:** Fleece Performance
- **Type:** Wiring Harnesses

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 54.44 CAD | In stock |

## Images

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/fleece-performance-01-19-gm-2500-3500-allison-lct-gm-4t65-e-internal-wire-harn-connector-seal)
> Updated: 2026-06-27