01 tahoe shuts off

need help !! please!! my tahoe suts off goin around turns ,,its 5.3 ,,seems like it idles low at times ..but driving its ok just when it slows down to turn or sometimes stop . it was at the dealership in february they said they cleaned the throttle body and sensor ..worked for awhile but now it is really bad goes down every other time. i have an appt. on monday want to know what to tell them ..thanks

Check both ends or both battery cables for loose or dirty connections.

//2000CAYukon

Have you been able to resolve this issue yet? I have an 01' Tahoe that does the same exact thing. Looking for help. I was told the MAF needed to be changed but it didnt help.