Manufacturer Part Number: 8HP45. OEM Part Number: 845RE, 8HP45, 8HP70, GSB233, GSB23TU, ZF8HP45, ZF8HP50, ZF8HP70, ZF6HP19, GA8HP45Z, 8HP55. If you installed a used 6 speed or 8 speed transmission or valve body assembly and your gear selector won't shift into gear then this service is for you.
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