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 MANUALSCHEVROLET2008EXPRESS 2500 V8-6.6L DSL TURBOREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGAUXILIARY CABIN HEATERSERVICE AND REPAIRHEATER COOLANT HEATER AIR TEMPERATURE SENSOR REPLACEMENT
2008 Chevrolet Express 2500 V8-6.6L DSL Turbo
Heater Coolant Heater Air Temperature Sensor Replacement
2008 Chevrolet Express 2500 V8-6.6L DSL TurboSECTION Heater Coolant Heater Air Temperature Sensor Replacement
Heater Coolant Heater Air Temperature Sensor Replacement
Tools Required
J-38125 Terminal Repair Kit
Removal Procedure
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the heater coolant heater.
3. Remove the heater coolant heater control module (4).
4. Remove the heater coolant heater blower cover retaining screws (2).
5. Remove the heater coolant heater blower cover (3).
6. Remove the heater coolant heater combustion cover retaining screws (1).
7. Remove the heater coolant heater combustion cover.
8. Remove the heater coolant heater temperature sensor retaining screw.
9. Remove the heater coolant heater temperature sensor retaining bracket.
Important: Remove and discard the O-ring on the temperature sensors.
10. Remove the heater coolant heater temperature sensors.
Important: Note the routing of the wiring to ensure proper installation.
11. Using J-38125-560 remove the heater coolant heater temperature sensors wiring from the electrical connector.
Installation Procedure
1. Install the heater coolant heater temperature sensors wiring to the electrical connector.
2. Install the heater coolant heater temperature sensors with new O-rings.
3. Install the heater coolant heater temperature sensor retaining bracket.
Notice: Refer to Fastener Notice.
4. Install the heater coolant heater temperature sensor retaining screw (5).
Tighten the screw to 1.5 N.m (13 lb in).
5. Install the heater coolant heater combustion cover.
6. Install the heater coolant heater combustion cover retaining screws (1).
Tighten the screw to 6 N.m (53 lb in).
7. Install the heater coolant heater blower cover (3).
8. Install the heater coolant heater blower cover retaining screws (2).
Tighten the screw to 6 N.m (53 lb in).
9. Install the heater coolant heater control module (4).
10. Install the heater coolant heater.
11. Lower the vehicle.
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.