Originally Posted by
brad
Not neccessarily.
When we had the diesel 4sp captiva it developed a vibration at 1800rpm-2000rpm. It sounded like a loose heatshield but was actually the torque converter not being able to decide if it wanted to lock-up or not (something like that). The cure was a software update. The downside was that it used about 20% more fuel.
Only a minor percentage of diesel auto Captivas developed this problem, so it would be foolish to automatically apply the software patch to all diesel autos if there wasn't a problem.