Been researching this topic for sometime, probably over 9 months now. I own 08 Tahoe, 132,000 miles. StabiliTrak, ABS light and Eng light all on. Occasionally, tranny shifts hard to 2nd. Remote start randomly works, immediately shutting off when it does work. Sometime the cruise doesn't work. Noticed speedometer spikes or falls quickly when driving above 5 mph. I've replaced both front wheel bearing assemblys and light is still on. Taking to dealer is out of question because I don't have $400 + to guesstimate what the problem is. I do have OBDII with ABS scanner. Only code I got was a U0070 communication bus something. HELP