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Thank you for using just answer.
This is a common problem on your truck, did the dealer have any other inspections or repairs other then what you mentioned above? How many miles on the vehicle?
276000 mainly highway miles. I drive 140 mile round trip to work and home daily
ok, high mileage and definately out of warranty.
Are you familiar with the engine computer on your vehicle and it's location?
My friend might find it. I do not know it location
Reason I ask is because there is a "known" issue on your vehicle with this code, this condition and this symptom. The issue is inside the engine control module and causes this malfunction, the part # XXXXX the ECU needs to be checked to see if it has the updated ECM or one of the old part #'s that is known for this. If the ECM is the wrong # XXXXX this is step #1 to replace.
These are all the old part #'s that are possibly on the ECM:
If any of these are on the computer then this is the old part #.
Yes with this kind of mileage on your transmission then there is also a possible issue inside the transmission but the computer needs to be addressed first.