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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P2771) >> DTC P0719 or P0724 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The brake switch indicates brake pedal status to the transmission control module (TCM). The normally-open brake switch supplies ignition voltage to the TCM. Applying the brake pedal closes the switch, resumes voltage to the TCM. Releasing the brake pedal interrupts voltage to the TCM.

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