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.
2006 Hummer H3 L5-3.5LFACTORY OEM SERVICE PROCEDURE
Capacity Specifications
REFRIGERANT OIL
COMPRESSOR REPLACEMENT
The Denso service compressor is precharged with 74 ml (2.5 oz) of PAG oil.
RECEIVER DRYER REPLACEMENT 23.0 ml (0.8 oz)
NOTE: Add the same amount of PAG oil drained from the failed receiver dryer, plus the specified amount.
CONDENSER REPLACEMENT 44 ml (1.5 oz)
NOTE: If more than the specified amount of PAG oil was drained from a component, add the equal amount drained.
EVAPORATOR REPLACEMENT 15 ml (0.5 oz)
NOTE: If more than the specified amount of PAG oil was drained from a component, add the equal amount drained.
TOTAL SYSTEM OIL CAPACITY 119 ml (4.0 oz)
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.