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P0299 and U1428

SOMD_ECO

Member
Jun 25, 2020
37
8
Truck Year
2018
I was driving today on cruise control and got a CEL and a Service Electronic Throttle Control message. Limped home and checked the codes and cleared them. Drove it for approximately 30 minutes with no issues. Not going to stray too far from home with it for now to see if it codes again. 52k miles on a 2018 with the original GDE tune and now the compliant one for the last year.
 
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