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More "sending unit" than "sensor".
You took off headers, and put different headers back on?
Is it the CORRECT sending unit? Intended for driving a gauge with the same temperature range as the gauge you have?
Yeah. But because it's defective, or because it's the wrong one?
Thanks for nit-picking. Replaced manifolds with headers, sorry. Does it matter? No. Yes it's the correct one. OEM replacement, already stated that. Picked up from the stealership for the exact truck.
Just because a dealership gives you a part, doesn't mean it's the right one. OEM replacement doesn't mean anything.
It is not nit picking, the sender in the head works differently than the sensor in the manifold. It helps to use the correct terminology when asking for help in a diagnosis.
One of the many services I provide, for free. And with enthusiasm.
Maybe. If the headers remove heat from the cylinder head instead of iron manifolds which help insulate the head, increasing the local temperature--the new temp sending unit MAY be entirely accurate. The headers very likely changed (lowered) the temperature around the sending unit.
But that doesn't guarantee that someone along the line didn't mis-box the part; or that GM themselves didn't change the specs on the unit to make it more "universal". Perhaps the human being that looked-up the part number made a mistake. Either looked-up the wrong number; or grabbed the wrong item off the shelf.
