If it's coming out the bell housing, it could be coming from the front pump gasket, and/or pump seal, and/or the torque converter seal.
Any or all of these 3 involve dropping the transmission to repair. It cannot be done any other way.
2007 GMC 3500 dually ext. cab 4X4 LBZ Dmax/Allison - 2007 Pacific Coachworks Tango 306RLSS
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