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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0977) >> DTC P0667, P0668, or P0669 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

The transmission control module (TCM) temperature sensor is located inside of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The TCM temperature sensor provides the temperature of the TCM. This temperature reading is used in various shifting and diagnostic routines in the TCM software. This fault is handled inside the TCM and no external circuits are involved.

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