How do i restart perform service light after oil change for jeep grand cherokee

If you press and hold (at least 3 seconds) the button (overhead) that you use to change what is displayed overhead it should reset the perform service reminder.

If it is only "perform service", this is likely your mileage counter telling you to get an oil change. If it was a "check engine light" it would be amber in color and would require use of a scanner to acquire codes and check for faults. Here's how to reset:
On a 1997 Jeep Grand Cherokee Laredo if the "Perform Service" light is in the middle of the dash Simply press the "SET" button until the display shows the "0 miles to service", Then hold the other button below it down until it resets to "3000".

Many times this light will come on when the oil needs to be changed.If oil has been changed recently the light may have not been reset at the time of service so the computer doesn't know when the oil was actually changed.

This is a oil change reminder. Nothing fancy about, when you get your oil change go into the menu and click reset counter and it will go off. If there was something wrong with your car the check engine light would come on.

Perform service indicator warning is a heads up that another oil change is needed. Your vehicles computer calculates a duty cycle for service intervals; Driving distance, stop and go etc... Change the engine oil, and reset the alert, and you'll be fine.

Actually the newer cherokees are a little more complicated, it's not a reminder for an oil change. It is for an emssions service that should be performed according to the dealer. Here is the rest procedure

Turn ignition to on position, but do not start.
Depress brake pedal fully twice.
depress excellerator very slowly twice
Turn ignition off & that will reset the perform service indicator.
I am mechanic & we are getting frustrated because the dealers do not want to release this info to anyone, they want your money! Can you believe if you did not get them to perform the service they charge you a 1 hour shop rate??

http://www.jeep.com/en/owners/manuals/index.html?year=2006&nameplate=Grand%20Cherokee

That should allow you to download a copy of the owner's manual that will detail the reset procedure.

Basically, on Jeep products you

To reset the oil change indicator system (after
performing the scheduled maintenance), refer to the
following procedure:
1. Turn the ignition switch to the ON position (Do not
start the engine).
2. Fully depress the accelerator pedal slowly three
times within 10 seconds.
3. Turn the ignition switch to the OFF/LOCK position.
NOTE: If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary repeat this procedure.

Oil change reminder light.

Yes, check to see if oil is dark or not. If dark change it, if not the light my mean you need tune up, plugs wires etc.

You have to manually reset it. Press the step button until miles to service comes up, then press and hold reset.