2005 Yukon getting P0784 code (check engine light on)
it was low on transmission fluid and a quart was added. Check engine light still on b ut only drove 2 1/2 miles after adding tranny fluid. Could this cause error or should I spend extra $ to have it looked at.
If it seems to be shifting okay, I would wait to see if the light goes out. If the code is clear it will go out by itself after a default number of start cycles with no codes.
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