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.
2007 Chevrolet Express 2500 V8-4.8LFACTORY OEM SERVICE PROCEDURE
Control Assembly: Locations
HVAC Component Views
Instrument Panel
1 - Turn Signal/Multifunction Switch
2 - Instrument Panel Cluster (IPC)
3 - HVAC Control Assembly
4 - Radio
5 - Auxiliary Power Outlet 2
6 - Traction Control Switch (JL4)
7 - Inflatable Restraint PASSENGER AIR BAG ON/OFF Indicator (Light Duty w/o YF7)
8 - High Idle Switch (UF3)
9 - Inflatable Restraint I/P Disable Switch (Heavy Duty)
10 - Cigar Lighter (DT4)/Auxiliary Power Outlet 1 (w/o DT4)
11 - Blower Motor Switch - Auxiliary (C36)
12 - Tow/Haul Switch
13 - Headlamp and Panel Dimmer Switch
Headliner
1 - HVAC Control Assembly - Front Auxiliary (C69)
2 - Courtesy /Reading Lamp - Front
3 - HVAC Control Assembly - Rear Auxiliary (C69 w/Rear Auxiliary Controls)
4 - Courtesy /Reading Lamp - Mid (Passenger)
5 - Courtesy /Reading Lamp - Rear (Passenger)/Dome Lamp - Rear (Cargo)
6 - Vanity Mirror - Right (DH6)
7 - HVAC Control Processor - Auxiliary (C69 w/Rear Auxiliary Controls)
8 - Vanity Mirror - Left (DH6)
Factory Service Tools
Use the Manual With the Right Hardware
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.