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Old 10-28-2015, 09:12 PM   #24
dwmitchell61
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Join Date: Jul 2015
Location: Benton City, WA
Posts: 37
Question Re: 1988 Canadian GMC C1500 305 TBI w/TH400HD going into 1973 C20 Custom Crew Cab

She runs! For the most part...

The truck runs well with no load. HOWEVER... it overheats when one tows a two horse trailer....

So I installed the SES lamp... BUT, should have unhooked the battery.... AAagghhh.... The battery power lead to the SES accidentally shorted when I was trying to connect it to the LED lamp...

Now no power at all. The BATT PWR lead to the SES lamp was connected to the BATT FUSED. Looking at that, there is something like a rectangular can in the position rather than a fuse. Is this a circuit breaker or a large fuse? It doesn't seem to unplug like a fuse.... Ugh... Pleas help!

I need to get the codes from the computer to see if there is a sensor or computer related issue, or if it is fan clutch/radiator issue. The thermostat is new and works.

Thanks in advance,

Dave
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