9-7X V8-5.3L (2005)
changed, making the pump cover bore length 2.7 mm (0.106 in) smaller.
To identify this pump cover, look for a stamped circle surrounding a letter on the machined surface below the stator shaft (View 1A), or a dimple or
slight hole in-line with the boost valve bore opening (View 1 B). The pump cover with the stamped circle is manufactured at the Toledo transmission
plant. Pump covers with the dimple/hole are manufactured at the Romulus, Michigan or Ramos, Mexico transmission plant.
Pump Cover Assemblies
The following text and illustrations will help you identify recent pump cover changes. The information begins with pump cover 1, before the addition of
the input speed sensor (ISS), and continues with the consecutive changes (pump covers 2 and 3) that allowed manufacturing to gradually incorporate the
ISS into pump cover 4. One important fact is that early pump covers cannot be used with ISS-equipped transmissions. Upon review of the information,
note the identification characteristic of each pump cover.
