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Home >> GMC >> 2018 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (Automatic Transmission - 8L45 (M5N M5T) Or 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P27A7-P27AD: Transmission Control Solenoid Valve 1-7 >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Obtain the replacement solenoid information code for all solenoids that were replaced, from the TIS Service Information web site.

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