Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009SILVERADO 3500 2WD V8-6.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDATA LINK CONNECTORLOCATIONS
2009 Chevrolet Silverado 3500 2WD V8-6.0L
Data Link Connector: Locations
2009 Chevrolet Silverado 3500 2WD V8-6.0LSECTION Locations
Wheels/Vehicle Underbody Component Views
Left Rear Frame and Underbody Components - 1 of 2
1 - Trailer Connector (UY7)
2 - Chassis Harness
3 - Camper/Trailer Harness
4 - Camper Trailer Blunt Cuts (UY2)
Left Rear Frame and Underbody Components - 2 of 2
1 - Rear Bumper
2 - Junction Block -Rear Lamps
3 - Data Link Resistor
4 - Trailer Connector (except MEX/EXP)
Rear Fram and Underbody Components (10 Series)
1 - Trailer Brake Control Relay (JL1)
2 - Trailer Brake Control Module (JL1)
3 - Trailer Connector (Except MEX/EXP)
4 - Fuel Pump Flow Control Module
5 - Data Link Resistor (Except LU3/LY6)
Rear Frame and Underbody Components (20/30 Series)
Left Rear Frame Rail (20/30 Series):
1 - Trailer Connector (except MEX/EXP)
2 - Trailer Brake Control Module (JL1)
3 - Trailer Brake Control Relay (JL1)
Rear Frame and Underbody Components (31 Series)
Right Rear Frame Rail (31 Series):
1 - Trailer Brake Control Relay
2 - Trailer Brake Control Module
Rear Frame and Underbody Components (JL4)
1 - Wheel Speed Sensor (WSS) -Left Rear
2 - Wheel Speed Sensor (WSS) -Right Rear
Passenger Compartment/Roof Component Views
Left Side of the Passenger Compartment Components (Extended/Crew Cab)
1 - Inflatable Restraint Roof Rail Module - Driver (ASF
2 - Rear Window Defogger Grid (C49)
3 - Seat Belt Pretensioner - Driver
Right Side of the Passenger Compartment Components (Extended/Crew Cab)
1 - Inflatable Restraint Roof Rail Module -Passenger (ASF)
2 - Data Link Resistor 2 (HP2)
3 - Seat Belt Pretensioner -Passenger
Instrument Panel/Center Console Component Views
Top of the I/P Components (CJ2)
1 - Air Temperature Sensor - Upper Left
2 - Air Temperature Sensor - Upper Right
Right Side of the I/P Components
1 - I/P Trim
2 - Junction Block - Right I/P
Below the Left Side of the I/P Components - 1 of 2
1 - I/P Trim
2 - Instrument Panel Cluster
3 - Data Link Connector (DLC)
Below the Left Side of the I/P Components - 2 of 2
Below the I/P:
1 - I/P Trim
2 - I/P Cluster Trim
3 - Floor Panel
4 - Junction Block - Left I/P (except MEX)
5 - Body Control Module (BCM)
6 - Transfer Case Shift Control Module (NQF/NQH)
7 - Fuse Block - I/P
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.