Silverado Steering Column Shift Mechanism 905-120

This is the steering column shift mechanism for GM trucks and SUVs with a column-mounted automatic shifter. It replaces 905-120, 19149553, 19180082, 26078376, 26088391, 26088393, 26091248, 26092432, 88965357 and 88967191. Listed fitment is the Chevrolet Silverado 1999-2006, Tahoe and Suburban 2000-2006, Avalanche 2002-2006, Blazer 1999-2005, S10 1998-2004 and Express 2003-2009, the GMC Sierra 1999-2006, Yukon 2000-2006, Jimmy 1998-2005, Sonoma 1998-2004 and Savana 2003-2009, and the Cadillac Escalade, ESV and EXT 2002-2006. It is built from steel and zinc alloy and comes pre-greased at the pivot points.

On these columns the original shift mechanism is a known weak point. The casting wears or cracks at the pivot, and the result is a shift lever that feels loose or sloppy, a PRNDL indicator that no longer lines up with the gear, a lever that is hard to pull out of Park, or a truck that will not start because the column does not fully reach Park or Neutral. Before replacing it, check the shift cable and its bushing at the transmission end, because a worn cable bushing causes some of the same symptoms.

To replace it, set the parking brake and chock the wheels, disconnect the battery, and wait before working on the column because of the airbag. Remove the column shrouds, disconnect the shift cable and the electrical connector from the old mechanism, and unbolt it from the column. Fit the new mechanism, reconnect the cable and connector, and adjust the cable with the column and the transmission both in Park. Then confirm every gear matches the indicator and the engine only starts in Park and Neutral.