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Discussion Starter #1
Whenever the temp is cold (all winter) or sometimes even on cool damp days, '97 k1500 5.7Vortec won't start unless I unplug the coolant temp sensor. I've replaced the sensor but still won't start when cold unless it's unplugged.
I don't want to leave it unplugged ( I plug it back in once it starts). Once it is started for the day it starts fine until it sits overnight. I am stumped.
 
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