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Re: 2000 C1500 harsh 1-2 shift, no codes
Posted to Transmission Forum on 5/22/2018

Well, thank you for all the input.

The vehicle has no powertrain codes. Stock intake system. Mass air reading is 191 G/S @5,000 rpm in 2nd gear, which I would call good for a 4.8. No TPS codes or glitches. Fuel trims short and long couldn't be better, rangin... Login to read more.