What are common vacuum leaks on 07 cadi cts and any problems relating to 3rd and 6th cylinder misfire has rough idle and stalls at certain shift..goin uphill ect..ki da c

What is your question?

Rough idle...EGR or EVAP light on top right above gas guage..3 and 6 cylinder misfire..stalls lags uphill and idle

What makes this problem better or worse?

Accelerating past those shift cylinders

How long has your 2007 Cadillac CTS had this problem?

Few weeks