My 2007 Tahoe LTZ 5.3 turns on but won't stay on. Service stabilitrak, traction and brake system lights all come on. We recently had cams and lifters changed, spark plugs and wires, had a new exhaust and cold air intake put on back in March. Continues problems and we have been trying diagnosis one possible problem at a time. We have change fuel pump thinking it was a fuel problem but after that the service brake system light came on. We changed the throttle body sensor and the stop light sensor last night. Added brake fluid to the truck and cleaned out the oxygen sensor. We are at a dead end and not sure which way to go now.

 

so the vehicle starts and stalls? What are the codes? Its just a guessing game unless you get the codes so you have a path to take.