2020 - 2021 Corvette: Service Bulletin: #21-NA-131: Memory Seat Module Does Not Adjust - (Jun 2, 2021)

#21-NA-131: Memory Seat Module Does Not Adjust - (Jun 2, 2021)

Subject:  Memory Seat Module Does Not Adjust

This bulletin replaces PIT5796A. Please discard all previous copies of PIT5796A.


Brand:

Model:

Model Year:

VIN:

Engine:

Transmission:

from

to

from

to

Buick

Envision

2021

2021

Cadillac

CT4

2020

2021

CT5

Escalade

2021

Escalade ESV

Chevrolet

Corvette

2020

2021

Suburban

2021

2021

Tahoe

GMC

Yukon

2021

2021

Yukon XL

 

Involved Region or Country

North America

Condition

Some customers may comment on one or more of the following conditions:

  • Auto Entry/Exit is intermittently or consistently inoperable.
  • The seat may intermittently not recall or exit despite the personalized settings being set.
  • Limited seat movement in one direction (specifically unable to move the recline axis).
  • The driver seat back will not recline or the seat will not move to the full rearward or forward position.

A technician may find a Service Driver Assist message or Super Cruise drops out intermittently and the External Object Calculation Module (EOCM) sets a DTC against the Memory Seat Module (MSM).

  • U0211 Lost Com
  • U0512 Invalid data

Cause

The cause of the condition may be a software anomaly in the MSM.

Correction

Reprogram the Driver Seat Adjuster Memory Module.

 

Version

1

Modified

Released June 02, 2021

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