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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1994 (Automatic Transmission - 6T75 - DTC P0218 To DTC P0977) >> DTC P0658 or P0659 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The transmission control module (TCM) high side driver 1 is located inside of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The high side driver 1 provides the voltage for the TCM pressure control solenoids and shift solenoids. This fault is handled inside the TCM and no external circuits are involved.

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