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.
2003 Hummer H2FACTORY OEM SERVICE PROCEDURE
Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs (N.m) | |
|---|---|---|
| A/C Accumulator Nut-To-Evaporator | 12 (16) | |
| A/C Belt Tensioner Bolts | 37 (50) | |
| A/C Refrigerant Filter Retaining Nuts | 11 (15) | |
| Compressor Bracket Mounting Bolts | 37 (50) | |
| Compressor Clutch Plate Retaining Bolt | 13 (18) | |
| Compressor Discharge Hose to Condenser Nut | 12 (16) | |
| Compressor Mounting Bolts | 37 (50) | |
| Compressor Suction/Discharge Hose Bolt | 12 (16) | |
| Compressor Suction Hose At Accumulator Nut | 12 (16) | |
| Evaporator Tube Fitting At Orifice | 18 (25) | |
| Evaporator Tube At Condenser Nut | 12 (16) | |
| Evaporator Tube At Evaporator Nut | 12 (16) | |
| Hood Spring Mounting Bolt And Nut | 13 (17) | |
| Recirculation Actuator Screws | 13 (17) | |
| INCH Lbs. | ||
| A/C Low Pressure Switch | 53 (6) | |
| Accumulator Bracket Nut | 80 (9) | |
| Accumulator Clamp Bolt | 88 (10) | |
| A/C Refrigerant Pressure Sensor | 53 (6) | |
| Air Distribution Duct Screws | 18 (2) | |
| Air Distribution Housing Screws | 18 (2) | |
| Blower Motor Screws | 18 (2) | |
| Condenser Upper Insulator Retainer Bolts | 80 (9) | |
| Filter Access Door Screw | 18 (2) | |
| Evaporator Core Cover Screws | 18 (2) | |
| Floor Air Outlet Duct Screw | 14 (1.6) | |
| Heater Core Cover Screws | 18 (2) | |
| HVAC Module Mounting Bolts | 35 (4) | |
| HVAC Module Mounting Nuts | 80 (9) | |
| HVAC Module Screws | 18 (2) | |
| Mode Actuator Screws | 18 (2) | |
Factory Service Tools
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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.
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