I‘ve been looking all over the web for this problem. Usually I hang at disco3.co.uk but couldn’t find an answer since most members drive V6 Diesel there and I suspect it‘s petrol V8 related. I signed up here especially for this thread.
I have exactly this „Sudden Acceleration While Parking“ problem and I‘m glad to hear that others are having the same issue.
It doesn‘t happen every time, just from time to time (every 2-3 weeks) - more often in winter.
I cleaned throttle and MAF, flushed automatic transmission, new transfer case oil - no big difference.
This can be very dangerous. When the car accelerates by itself, I need to press the brakes really hard to stop it. Until now I was always able to prevent an accident but was thinking, if my reaction was slower next time ... or someone else is driving the car and is surprised by it ...
What‘s the latest solution to this? Can the Califonia Stop Software Update help fixing it?