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4L60 Adaptive relearn
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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| VIN | 1GKEC13R8X |
| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1999 GMC Yukon SLT 5.7L
| VIN | 1GKEC13R8X |
| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
Video