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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (Automatic Transmission - ALLISON (Introduction, Service & Replacement)) >> Description and Operation >> Definitions and Abbreviations >> Throttle-Related Shift Condition Definitions

Throttle-Related Shift Condition Definitions

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Closed Throttle Manual Downshift

A condition where the engine is used to slow the vehicle by manually downshifting during a closed throttle coastdown.

Closed Throttle Coastdown

A full release of the accelerator pedal while the transmission remains in drive range, allowing the transmission to downshift as vehicle speed reduces.

WOT Detent Downshift

Quick apply of the accelerator pedal to its full travel, forcing a downshift.

WOT Upshifts/Downshifts

Accelerator pedal is fully depressed and transmission shifts sequentially through ranges as dictated by load and grade.

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