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 MANUALSCHEVROLET2012EXPRESS 2500 V8-4.8LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLEFLUID PRESSURE SENSOR/SWITCHLOCATIONS
2012 Chevrolet Express 2500 V8-4.8L
Fluid Pressure Sensor/Switch: Locations
2012 Chevrolet Express 2500 V8-4.8LSECTION Locations
Powertrain Component Views
Automatic Transmission Internal Electronic Components (M30)
36 - Automatic Transmission Output Shaft Speed (OSS) Sensor
66 - Torque Converter Clutch (TCC) Solenoid Valve
69 - Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
367a - 1-2 Shift Solenoid (SS) Valve
367b - 2-3 Shift Solenoid (SS) Valve
377 - Pressure Control (PC) Solenoid Valve
394 - 3-2 Shift Solenoid (SS) Valve
396 - Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) Solenoid Valve
RENDER: 1.0x
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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.