2020 - 2021 Corvette: Service Bulletin: #21-NA-131: Memory Seat Module Does Not Adjust

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

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#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:
Brand:	Model:	from	to	from	to	Engine:	Transmission:
Buick	Envision	2021	2021	—	—	—	—
Cadillac	CT4	2020	2021
	CT5	2020
	Escalade	2021
	Escalade ESV	2021
Chevrolet	Corvette	2020	2021
	Suburban	2021	2021
	Tahoe	2021	2021
GMC	Yukon	2021	2021
GMC	Yukon XL	2021	2021

*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