Attention: TDR Forum Junkies 
After having my CEL on for some 3,000 miles during a trip cross country towing my 34' 10,000 Lb toy hauler, I decided to get this thing figured out. After a little research, I found a nice write up at Geno's garage site explaining how to clean the MAP sensor in the intake manifold. Removed it, cleaned it and reset the codes with my programmer. No more P0069. It turns out that the sensor in the intake manifold(not the one in the air intake called the IAT sensor) was covered in soot and the ECM wasn't getting good "M"anifold "A"bsolute "P"ressure readings. Just sharing the experience because I know this is a very common code.
Cheers
Mike
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Cheers
Mike
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