HVAC Lack of Performance/Single A/C System Only (Evacuate/Recharge A/C System)

Some customers may comment on a lack of performance of the air conditioning system in hot, humid weather.

This condition may be due to an undercharged air conditioning system during the vehicle assembly process.

1. Perform the Cooling Insufficient, A/C System check. Refer to the HVAC Systems-Manual sub-section of the Service Manual. If a condition is identified, make the appropriate repair. If no abnormal condition is identified, proceed to the next step.
2. Evacuate and recharge the A/C system with 1.08 kg (2.375 lbs) of R-134a.
3. Replace the A/C evaporator label with P/N 10443319. This label will allow future service technicians to know how much refrigerant is required by the system.
4. Inspect/test the A/C system for signs of leaks, both visually and with the A/C leak tester.
5. If a leak is found, perform the recommended repair. Refer to the HVAC Systems-Manual sub-section of the Service Manual.
6. If no leaks are found, perform the Cooling Insufficient, A/C System check. Refer to the HVAC Systems-Manual sub-section of the Service Manual. If a condition is identified, make the appropriate repair. If no abnormal condition is identified, return the vehicle to the owner.

Parts are currently available from GMSPO.

For vehicles repaired under warranty, use:

*The 0.6 hr includes the time required to install the new label.

If an evacuate and recharge was required, add 0.9 hr to the base time for evacuating and recharging the HVAC System.

This is a unique Labor Operation Number for use only with this bulletin. This number will not be published in the Labor Time Guide.