Probably unrelated, but has anyone noticed as these trucks age, the gauge on the dash reads lower? This is something that has bugged me for years, and has been noted on several trucks.
My ‘02 S10 for example, at operating temp read about 1 tick under the 210 mark on the gauge. As the truck aged it slowly dropped to only about the first large hash mark, or the 1/4 position.
This is where my 2000 CCDRW operates at now. I’ve swapped to a Denali cluster, and there is no change, so it’s not the air core motor. It doesn’t fluctuate, but it’s annoying to me that it isn’t working the way it once did.
I wonder if the temp sender increases resistance over time. I guess a new one is cheap enough to try.