thankyou so much this is the same worded differenet that I found and helped
I found this on a Google Forum:
For the '99's, the Owner's manual says -
1) Turn key from OFF to ON eight times within 10 seconds ending
in the ON position.
2) After doors lock then unlock, press any button on the
remote being programmed.
3) The doors should lock/unlock to confirm programming.
4) Turn key to OFF and door locks should cycle one last time.
You can program up to four remotes this way, but they must
all be done at the same time (repeat step 2 for each). | 
