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 2500 2WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULELOCATIONSCOMPONENT LOCATIONS
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL Turbo
Component Locations
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL TurboSECTION Component Locations
Front of Vehicle/Engine Compartment Component Views
Left Rear of the Engine Compartment Components
1 - Windshield Wiper Motor
2 - Power Brake Booster (JL4)
3 - Windshield Washer Solvent Heater (XA7)
4 - Fuse Block - Underhood
5 - Engine Control Module (ECM)
6 - Transmission Control Module (TCM) (M30/M70/MW7)
7 - Brake Booster Vacuum Sensor (JL4)/Brake Master Cylinder Pressure Sensor (JL1)
8 - Brake Fluid Level Switch
Left Rear of the Engine Compartment Components (Except HP2)
1 - Windshield Wiper Motor
2 - Windshield Washer Solvent Heater (XA7)
3 - Fuse Block - Underhood
4 - Engine Control Module (ECM)
5 - Transmission Control Module (TCM) (M30/MW7)
6 - Brake Booster Vacuum Sensor (JL4 with 10 Series)/Brake Master Cylinder Pressure Sensor (JL1)
7 - Brake Fluid Level Switch
Left Rear of the Engine Compartment Components (HP2)
1 - Brake Master Cylinder Piston Position Sensor
2 - Brake Fluid Level Switch
3 - Fuse Block - Underhood
4 - Battery
5 - Engine Control Module (ECM)
6 - Fuse Block - Auxiliary
7 - Battery Current Sensor
8 - Windshield Wiper Motor
Rear of the Engine Compartment Components (Diesel)
1 - Battery - Right
2 - Fuse Holder
3 - X127
4 - X108
5 - X107
6 - X123 (PTO)
7 - Fuse Block - Underhood
8 - X109
9 - Battery - Left
10 - Engine Control Module (ECM)
11 - Transmission Control Module (TCM) (MX7)
Rear of the Engine Compartment Components
1 - Battery - Right
2 - Windshield Wiper Motor
3 - Windshield Washer Solvent Heater (XA7)
4 - Fuse Block - Underhood
5 - Battery - Left (Diesel/6A6/T92)
6 - Windshield Washer Fluid Level Switch
7 - Windshield Washer Fluid Pump
8 - Air Cleaner Box
Rear of the Engine Compartment Components (4.3L)
1 - Battery Current Sensor (except MEX)
2 - Mega Fuse
3 - A/C Low Pressure Switch (C67/CJ2)
4 - Fuse Block - Underhood
5 - Engine Control Module (ECM)
6 - A/C Refrigerant Pressure Sensor (C67/CJ2)
7 - Mass Airflow (MAF)/Intake Air Temperature (IAT) Sensor
8 - Battery - Right
Rear of the Engine Compartment Components (TP2)
1 - Fuse Holder
2 - Auxiliary Battery Run Relay
3 - Auxiliary Battery Harness
4 - Auxiliary Battery Relay
5 - X122
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.