My 2001 Impala check engine light has come on with the code of P1887. My research indicates this is a electrical failure with the TCC solenoid. All of the trans solenoids have common power according to my schematic, so I am focusing on the ground(trigger) wire running to the PCM. I have some ideas on how to test this issue, but I would really like some feedback on how other have handled this issue.
Thanks.
Thanks.