Epc light on and it says service due but I just had an oil change and everything was checked. The car shakes when driving and jerks sometimes when turning on and off

YES!!HE MIGHT BE RIGHT BUT I NEED THE DTC CODES!!!

check fuel system for any leaks and emissions controls for leaks also do a tune up on it if necessary.

Problem is with the transmission fluid. Get it changed and get the oil filter changed if required. Get the conditions of the gears checked. Those jerks may be due to broken or damaged teeth.

Could be ignition coils, sensors are also prime candidates a good mechanic should be able to read the error codes to help pinpoint.

Retrieve the trouble codes and fix any problems. if you dont have acces to scanner there are places out there that will scan it for free. Know, however, that just scanning it it's not a diagnosis. Fix the leaks, change the oil and add propper amount and type of oil. The shaking of the engine could be due to misfires causing the vehicle to run rough but in order to find out you need to retrieve the trouble codes. Best bet is to take it to a shop and have it diagnosed.

When was the last time you changed your Air filter( A dirty filter can put MAF sensor out of range). How about the fuel filter (Fuel starvation). These filters should be changed every 30,000 miles . It is normal for all of the dash lights to come on if the engine stops running. Is the Jetta a Diesel or Gas. Perform The OBDII scan again to see if current faults are present. Do the cheapest fixes first. Also check oil often. The low oil sensor will trigger engine shut down if more than 1 quart low

Skipping and jerking due to slip in transmission most likely, and change oil light needs to be reset if you changed the oil on it yourself, refer to owners manual or search online for reset procedure

1. Extremely harsh shifts from P or N, normal shifts at WOT: EPC (Electronic Pressure Control) solenoid failed. Easy fix in pan. Fix as soon as possible or hard parts will eventually break.
2. Shift suddenly become very hard. When going from park to either reverse or drive it slams into gear. 1-2 and 2-3 shifts are also harsh. All gears seems to work. Problem may be intermittent: Check TPS for smooth electrical response. If the response is jumpy or erratic at all, replace TPS.
There are two thing that may be happening that you have described, but you can tell which one it will be since your driving the Blazer. Both are simple to repaire, but to change the EPC. Your going to have to drop the transmission pan so that's going to be a transmission shop and call around, the EPC can be replace the same time there draining the transmission fluid when servicing the transmission which is about $110.00 for fluid and filter replacement and additional $65.00-$80.00 for the EPC valve.
EPC (electronic pressure control) valve TPS (Throttle position sensor)
Thank you for using Fixya and good luck. If it's the EPC failure, replace as soon as possible. may casue the sunshell to fractured or splines to sheared off.

It could be unrelated to the oil change unless the filter must be replaced with a mitsubishi one due to the backflow prevention valve built into it.

Have the codes read at autozone and see what they say.

Your engine has a cylinder miss-firing, that not only shakes the car but makes the check engine light blink the cylinder number that is missing, don't drive the car this way or u will overheat the exhaust catalytic converter, this can cause a fire.