Technical Bulletin # TCB2
Transmission: AF23-5/AW55-50SN/RE5F22A
Subject: P0740 After Rebuild
Application: GM/Volvo/Nissan
Issue Date: August 2010

AW55-50SN P0740
P0740 after rebuild may be caused if the Forward/Direct (Input) housing was changed during the
overhaul with the wrong size input shaft. There are two different input shaft diameters one measuring
0.844” for 2 wheel drive vehicles and one measuring 0.870” for 2 wheel drive turbo or all wheel drive
vehicles. The smaller shaft installed in place of the larger one will cause the loss of converter clutch
apply oil.

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August 2010