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Home >> Chevrolet >> 2011 >> Suburban C2500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 1743 (Automatic Transmission - 2ML70 - Description And Operation) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Drive Range, Second Gear >> Notes

Drive Range, Second Gear: Notes

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

As vehicle speed increases and operating conditions become appropriate, the transmission control module (TCM) processes input signals from the input and output speed sensors, the throttle position (TP) sensor and other vehicle sensors to determine the precise moment to de-energize or "turn OFF" the normally low pressure control solenoid 4 trim, to command ON the normally high pressure control solenoid 2 trim, and shift the transmission into Second Gear:

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