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Old 02-06-2023, 01:19 PM   #6
7beast
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Location: Houston Texas
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Re: 1990 c3500 coolant temperature sensor wiring question

Quote:
Originally Posted by ChevyTech View Post
You're welcome!

Yes the coolant sensor yellow goes to C10.

The schematic in the 1990 wiring manual shows the coolant sensor black goes to the ECM terminal D2.

Another GM manual I have shows it could go to terminal A11.

Which trans & engine did it have?
It originally had the sbc 350 with th400 transmission sir
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