Transmission suddenly jerks and then anytime you shift from park to reverse somewhat on drive The oil change guy said that need trans services does mean overhaul is it safe drive?

A transmission that jerks, especially when shifting from Park to Reverse or Drive, and after an oil change, strongly suggests a problem that needs professional attention. The mechanic's suggestion of "transmission service" doesn't automatically mean a complete overhaul, but it's a serious issue that warrants investigation. A simple service might involve a fluid and filter change, but given the symptoms, more extensive internal issues are likely.

Is it safe to drive? Probably not. Continuing to drive with a jerking transmission could cause further damage, potentially leading to a complete failure and expensive repairs. The damage could range from worn clutches and bands to more severe internal problems.

What you should do:

* Get a second opinion: Take your vehicle to a reputable transmission specialist (not just a general mechanic) for a proper diagnosis. Explain the symptoms in detail.

* Don't ignore the problem: Delaying repairs will almost certainly worsen the situation and increase the cost of fixing it.

* Drive cautiously: Minimize shifting as much as possible while you get it checked. Avoid aggressive acceleration or hard braking.

The cost of a transmission service varies greatly depending on the vehicle and the extent of the work needed. A simple fluid and filter change is relatively inexpensive, but a more significant repair could cost thousands. Getting a proper diagnosis from a specialist is the first and most important step.