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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSTICS (DTCs P0732-P0877)) >> DTC P0827 >> Circuit Description

Circuit Description

WARNING: This page is about a different variant/trim than selected.

The transmission adaptive pressure (TAP) up/down shift system allows the driver to manually shift gears by using the TAP shift switch located on the automatic transmission shift lever. Pushing the switch forward will command an upshift and pushing the switch rearward will command a downshift. The TAP shift system is activated when the gear selector is in the manual (M) position.

DTC P0827 is a type B DTC.

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