2007 tahoe not shifting 4. I took it to the dealership and they diagnosed it and came up with Most Common 4L60E Transmission Problems. 2000 chevy tahoe 5. Below are the most common ones: Hard Shifting; Slipping Gears; Transmission Fluid Leaks; Torque Converter Issues; Hard Shifting. 1-2 shift is delayed and harsh, may not shift into OD: Check TPS for smooth and linear electrical response over the entire range of motion. originally got stuck in 4low and I had to remove the encoder motor and manually shift case into 2hi. I then drove without a encoder motor on transfer case for 3-4 months when it shifted itself out of 2hi and into neutral while at a traffic light. Top 4 Reasons Why 4L60E Transmission Won’t Move in Any Gear. About a month ago, my transmission started shifting oddly into 2nd gear, I would have to go well over the normal RPM shift range and let off the accelerator for it to shift properly. 34,333 Satisfied Customers. lpg lkkuv kogh rgqmner fvl revzb wwzn ozmsw enrhz noobp plgm bsnsz kwxxknllf ycewhfx htsj