Memory Functions

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 GMC Yukon XL, 2010 GMC Yukon, 2010 Chevrolet Tahoe, 2010 Chevrolet Suburban, and 2010 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Battery voltage is supplied at all times to the memory seat adjuster switch or memory/heated seat switch from the driver door lock/window switch that is located on the driver door panel. When a memory button is pressed, battery voltage is applied through the switch contacts, a series of resistors, and the memory recall switch signal circuit to the driver door lock/window switch. In response to this signal, the driver door lock/window switch sends a serial data message to the MSM indicating the memory request.

Memory positions may be recorded for 2 different drivers. To record a position, adjust the driver's seat, lumbar support, adjustable pedals, and steering wheel and column to the desired position. Press and hold the memory 1 button until two beeps sound indicating that the position has been stored to memory. A second memory position may be programmed by repeating the above steps and pressing button 2, for driver 2. When the MSM receives a memory set message, it records the feedback voltages from the seat, lumbar, adjustable pedals, and steering wheel position sensors for the appropriate driver.

When a memory recall button is pressed, a single beep will sound to acknowledge the command has been received. The MSM will then move the appropriate seat, lumbar support, adjustable pedals, and steering wheel and column motors until the position sensor feedback voltages equal the feedback voltages stored in memory for the identified driver.

Memory recall operation is disabled if the shift lever is out of NEUTRAL (N) or PARK (P). The MSM receives the transmission selector position data via the GMLAN Serial Data circuit.