CEL won’t come on

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Papikev252

Newbie
Joined
Jun 4, 2023
Messages
30
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12
Location
California
98 K3500 7.4L
Trying to figure out why my CEL only will come on sometimes. When I turn the key to the on position it will most of the time not come on. One day it’ll do it for the day and sometimes on the same day it will not. If I have a code it’ll stay off for a while and then maybe once in a while show on the dash so I know the bulb is good. I did not to long ago pull the cluster to change the faces but I didn’t touch the CEL bulb. Wondering if this is a cluster issue? I’ve also read to where sometimes people say it’s a ECM issue. Wanted to see your guys opinion.
 
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