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Thank You Greatly! I will have to check this out. I have had the dash and all comp. r/r and did not see this condition , however.......

Thank you for your reply, however it appears to vary from this one I found: SERVICE BULLETIN:040138008 NHTSA ITEM NUMBER:10012173 MFG Bulletin Date: 20040601 Component: AIR CONDITIONER Bulletin Summary: HEAT VENTILATION AND AIR CONDITIONING SYSTEM CANNOT BE CONTROLLED OR...

I was wondering if anyone can help me with finding out the content of this service Bullatin # 040138008

I have been having an on going issue with my HVAC vent control. I have found a GMC service bullatin that may apply however I need help finding out what this bullatin says? Can anyone help me with this? # 040138008 Thanx