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Username Post: 88 K3500 7.4L no knock sensor, no ESC Module
Senior Member
Posts: 3768
Loc: Northern MN
Reg: 10-27-04
02-21-12 10:31 AM - Post#2193362    
    In response to stumppuller

Missed that, then no doubt this should have thrown a code if what the dealer says is true which means ses light which never came on. Something else is likely going on. I would start by checking base timing and replace thermostat.
98 Silverado k1500 4x4 350

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