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Username Post: 2-3 shift flare        (Topic#350930)
Posts: 139

Age: 20
Loc: Dayton Texas
Reg: 02-23-15
05-02-18 06:24 AM - Post#2732837    

If you are thinking about getting a cold air intake for your 5.3 07-13 1500 truck with the 6l80, you will need a tune. The TCM uses data from the MAF to help manage torque when shifting. With a cold air intake installed the velocity of the air passing the sensor changes and gives an invalid reading to the TCM. This caused my 2-3 shift flare. The flare went away after I installed the factory intake back on the truck.

2012 silverado, bone stock.

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