Hummer H2 Tech Bulletins / Recalls

[Klaus]

Document ID # 914990

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Service VME - Air Conditioning Provides Insufficient Cooling #PI00357A
Service VME -- Air Conditioning Provides Insufficient Cooling
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When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

SERVICE VME
This is a revision to a message previously sent. If a customer indicates that the air conditioning system on a 2003 H2 is not providing sufficient cooling, it could be due to the system not going into recirculation if operating in the "Auto" mode. It is advised that during pre-delivery inspection of all new vehicles, your technicians pull the A/C fuse for 15 seconds and then reinstall it. This will re-calibrate the system and may prevent this condition from occurring. Revised software is currently being developed for production as a permanent field fix, but will not be available for a period of time. If the condition persists, advise your customers to manually select the recirculation mode by pressing the corresponding button on the control head. You will be advised upon availability of the revised software.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.