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Re: 1990 c3500 coolant temperature sensor wiring question
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?
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
Last edited by ChevyTech; 02-06-2023 at 12:54 PM.
Reason: Add more
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