Condition: Excellent (A)
Mileage: 172,000 miles
This is a complete engine wiring harness.
Condition: Good (B)
Mileage: 172,000 miles
Condition: Excellent (A)
Mileage: 56,000 miles
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4-wheel drive. This is an inner harness.
Condition: Excellent (A)
Mileage: 169,400 miles
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4x4 drive. This is an injector wire harness.
Condition: Excellent (A)
Mileage: 63,400 miles
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4-wheel drive.
Condition: Excellent (A)
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4x4 drivetrain. This is an inner wire harness.
Condition: Excellent (A)
Mileage: 198,900 miles
For vehicles with the 6.6L turbo diesel engine and automatic transmission. Fits rear-wheel drive vehicles. This is the outer harness.
Condition: Excellent (A)
Mileage: 180,700 miles
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4-wheel drive. This is the outer engine wire harness.
Condition: Excellent (A)
Mileage: 174,300 miles
This is a complete engine wiring harness.
Condition: Good (B)
Mileage: 238,000 miles
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4x4 (four-wheel drive). This is the outer harness.
Condition: Excellent (A)
Mileage: 282,600 miles
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4-wheel drive. Includes the inner and outer harness sections.
Condition: Excellent (A)
Mileage: 98,300 miles
This is an outer harness.
Condition: Excellent (A)
Mileage: 95,000 miles
For vehicles with the 6.6L turbo diesel engine, automatic transmission, and 4-wheel drive. This is the outer harness.
Condition: Excellent (A)
Mileage: 490,400 miles
It fits vehicles with the 6.0L engine, automatic transmission, and 4-wheel drive.
Condition: Excellent (A)
Mileage: 110,600 miles
For vehicles with the 6.6L turbo diesel engine and automatic transmission. Fits 2-wheel drive vehicles.
Condition: Excellent (A)
Mileage: 102,100 miles
This is a complete engine wiring harness.
Condition: Excellent (A)
Mileage: 73,000 miles
For vehicles with the 6.6L turbo diesel engine and automatic transmission. Fits 2-wheel drive models.
Condition: Excellent (A)
Browse our selection of quality engine wiring harness parts designed specifically for your GMC Sierra 3500 HD. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
AT4 · Base · Denali · Pro · SLE · SLT · WT
Cab & Chassis · Crew Cab Pickup · Extended Cab Pickup · Standard Cab Pickup
V8 6.0L · V8 6.6L
Automatic
