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 MANUALSGMC2013SIERRA 2500 2WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLECONTROL MODULELOCATIONSTRANSMISSION CONTROL MODULE (TCM)
2013 GMC Sierra 2500 2WD V8-6.6L DSL Turbo
Transmission Control Module (TCM)
2013 GMC Sierra 2500 2WD V8-6.6L DSL TurboSECTION Transmission Control Module (TCM)
Front of Vehicle/Engine Compartment Component Views
Engine Compartment Components (Diesel)
1 - Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
2 - Charge Air Cooler Outlet Temperature Sensor
3 - Transmission Control Module (TCM)
4 - Nitrogen Oxides Sensor 1
5 - Fuse Block - Underhood
6 - Engine Control Module (ECM)
7 - Engine Coolant Level Switch
RENDER: 1.0x
NO RELATED
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Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.