abs tracs
 

here we go again..recently abs/tracs lights came on.put dealers gismo on it no fault found..decided to send abs/tracs brain module of for repair to autotech they found faults with this fixed it and sent it back.Put it in car everything fine abs and tracs working xcellent..5 days later lights come on again put it on gismo no fault codes found i,m at me wits end any ideas.1st time it went you could feel abs pump pulsing and coming on and off and this was the fault found at autotech now the brakes work fine but no abs or traction.help please