Well I've had my 04 LS8 on jackstands for the past 6 months due to the harshness of gear shifts (P->R , 3->4 mainly) and am finally getting around to fixing it up. Picked up a remanned solenoid block from THIS store on ebay. I know it's less ideal than OEM, but am trying to skim by on spending with my wedding on the horizon. Anywho, I dropped the pan, pulled the old solenoid (cut-down 10mm swiveling ratchet is a lifesaver), and popped the remanned one in. Pumped in around 4 quarts of Merc while the vehicle was *off*, which I now know is wrong, and let it drain for a little. Plugged it back up and fired up the motor but am getting the "check transmission" error, E on the instrument cluster, and a yellow check engine icon. Also pulling codes very similar to the post HERE. Indicating to me that somehow the bulkhead connector/wiring harness is not seated properly. All 4 solenoids are throwing codes which I find highly unlikely even though it is re-manufactured..
Went on today with pulling the bulkhead back off, inspecting it, and plugging it back in making sure to torque down the nut pretty good to ensure a connection. Same results minus the yellow CE icon. I've pulled the battery after each attempt so I believe the PCM should have been cleared. The tranny doesn't throw these codes if the fluid level is off, does it? Perhaps the bulkhead connector is bad somehow? Possible even after the solenoid bolts were torqued to spec that it still isn't seated close enough to the bulkhead? I plan to pull off the bulkhead again tonight and check the pins on the solenoid with an inspection mirror. Hoping to get this fixed without dropping the pan once again. Any input is greatly appreciated!
Went on today with pulling the bulkhead back off, inspecting it, and plugging it back in making sure to torque down the nut pretty good to ensure a connection. Same results minus the yellow CE icon. I've pulled the battery after each attempt so I believe the PCM should have been cleared. The tranny doesn't throw these codes if the fluid level is off, does it? Perhaps the bulkhead connector is bad somehow? Possible even after the solenoid bolts were torqued to spec that it still isn't seated close enough to the bulkhead? I plan to pull off the bulkhead again tonight and check the pins on the solenoid with an inspection mirror. Hoping to get this fixed without dropping the pan once again. Any input is greatly appreciated!
Last edited: