Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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Even though the transmission was replaced the torque converter lock up solenoid can be faulty in the transmission that was just installed.I have seen this before unfortunately and had to replace it.This would be covered under parts warranty and labor warranty by a repair facility through the company the transmission was purchased from if this was a transmission that carried a warranty.
The only other issues that can cause this here is a wiring fault leading from the PCM (engine and transmission computer) to the transmission or an issue internally in the PCM itself.But if this code was not an issue until the transmission was replaced I suspect the solenoid in the transmission is at fault needing replaced and I would check into the company that sold it to you as they should cover the costs for replacement if the transmission carries a warranty.
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This indicates the evap test has not been run by the computer itself in the vehicle.The computer has to see certain criteria before it runs the evap testing like certain fuel level in the tank and certain driving conditions.Usually you want around 1/2 tank or less and drive the vehicle around 30 miles to get it to run this test here.
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