GENERAL MOTORS AW 55-50
Valve Body identification
Please find below information about the Valve Body Identification of:
- AW 55-50SN Early
- AW 55-50SN Late
- AW 55-50SN Late with Spring
The early version of the AW55-50SN valve body will have no casting stamp or an “A” casting stamp. The late version of the AW55-50SN valve body will have a “B” or “C” casting stamp. Please see blue arrow for the location of the casting stamp.
The S2 solenoid will have a domed top, like the picture shown left.
Please see green arrow above for the location of the S2 solenoid.
Important identification information:
In model years 2005 & up, this valve body may have a spring under the B5 control valve. To obtain the correct valve body for your application, please check the vehicle production date. Check for presence of spring before ordering, see orange arrow for the location of the spring!
VMR part number – AW55-GME
AW55-50SN Late – No B5 spring
VMR part number – AW55-GML
AW55-50SN 2005-up – With B5 spring
VMR part number – AW55-GMLSP
Torque Valve Body bolts to 10 Newton-meter.