Thread: 2021 1LE mystery flashing CEL
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Old 06-23-2021, 11:48 AM   #9
joeyazzata29
j1ss
 
Drives: '21 2SS 1LE
Join Date: Dec 2019
Location: Florida
Posts: 384
Quote:
Originally Posted by Kmeleon View Post
Is your car and Auto or manual? It could be a dfm lifter failure. Going through this with my 2021 Sierra right now
Auto, is your issue intermittent like this? And only happens under heavy load?
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