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89' K5 350 TBI dim SES light

Big_Bear84

Registered Member
Joined
Oct 9, 2017
Posts
8
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Location
Finland
Hi,guys! Greetings from Finland.

I've installed a smaller fuel gauge in my cluster cause i wanna take out original big fuel gauge and put tach in there.

So,now i've got a problem-SES light is on while engine is running and it's dim.

Truck runs like a champ,no trouble codes and nothing issues,but SES light is on. It's coming on and it's bright when turning ignition to ON position( this is have to be), but when engine starts up and runs,SES light just go dimly but stayin on. Tried to shoot the codes-nothing,only code 12(have to be cause engine wasn't running). Battery was disconnected for 10min,didn't help.

Where is a possible problem and what i have to look?

Thank you guys.

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