Engine Mechanical problem 2005 Cadillac SRX 6 cyl Two Wheel Drive Automatic 100,00 miles the car has a pulse on acceleration mainly over 40 had it fixed once said it was coil now it is doing it again service said has 3 ignition cails and must be one of the others. paid $546 to have fixed then sould they have not replaced all 3

Engine Performance problem 2005 Cadillac SRX 6 cyl Two Wheel Drive Automatic 65000 miles I have a 2005 SRX from Cadillac. When I shift to put in on drive, it makes a loud noise and seems like the whole car jerks. Could this be a transmission problem?