Bulletin Information

Bulletin Title: #21-NA-128 - MIL Illuminated- ECM Update for P026C, P20EE, or P11D5 - (May 28, 2021)
Bulletin Type: Technical
Applies To: Vehicle DTC Information / Programming and Setup / Displays and Gauges / Engine Controls and Fuel

#21-NA-128 - MIL Illuminated- ECM Update for P026C, P20EE, or P11D5 - (May 28, 2021)

Subject:
MIL Illuminated- ECM Update for P026C, P20EE, or P11D5

Brand:

Model:

Model Year:

VIN:

Engine:

Transmission:

from

to

from

to

Chevrolet

Silverado 2500HD/3500HD

2021

2021

Before 1GC4YTEY5MF261413

Equipped with 6.6L Engine (RPO L5P

GMC

Sierra 2...

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Document Tags

Document Title: #21-NA-128 - MIL Illuminated- ECM Update for P026C, P20EE, or P11D5 - (May 28, 2021)

update

engine

equipped

software

open

campaign

install

control

module

sure

connected

programming

voltage

system

connect

screen

vehicle

click

size

important

select

warranty

information

transaction

claim

code

card

labor

operation

field

engine control

size click

warranty transaction

warranty claim

code field

reprogram engine control

engine control module

interruption programming programming

programming programming failure

programming failure control

failure control module

control module damage

module damage occur

click size click

size click size

important avoid warranty

avoid warranty transaction

warranty transaction rejections

warranty claim code

claim code field

code field transaction