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4L60 Adaptive relearn
Posted to Transmission Forum on 1/22/2018 5 Replies

Hello, I have installed a OE manufactured 4L60 tranny from the dealer on this 99 Yukon. It has a 1-2 shift that is a little harsh usually coming from a dead stop only and not every time. We don't install a lot of transmissions (we get priced out by the transmi... Login to read more.

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car Vehicle Data

1999 GMC Yukon SLT 5.7L

VIN 1GKEC13R8X
Engine5.7 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

1999 GMC Yukon SLT 5.7L

VIN 1GKEC13R8X
Engine5.7 L
Trans4-speed Automatic (Electronic)