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GMC TSB #PIT4669D
2011 GMC Yukon
TSB Document:
Affected Component: EQUIPMENT:APPLIANCE:AIR CONDITIONER
- Summary
- This Preliminary Information communication informs the technician Polyalkylene Glycol is not compatible with the Hybrid Polyester oil. When vehicles with Hybrid Air Conditioning system have been injected with any commercially available Ultra Violet dye the system should be flushed of all system oil. Most ultra violet dyes contain Polyalkylene Glycol oil.
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