2008 Trailblazer LT 4 button Key Remote

[King of Kings]

SOS !! I HAVE A 2008 TRAILBLAZER LT. IT CAME WITH ONE KEYLESS REMOTE (4 BUTTON MODEL: H50T21. I HAVE FOLLOWED ALL SORTS OF PROGRAMMING INSTRUCTIONS FROM THE INTERNET, BUT NONE HAVE WORKED.

YOU SEE, NONE OF THE INSTRUCTION SAY THAT THE BLAZER WILL HONK SOFLY TWICE AFTER TURING THE KEY 2 TIMES WHILE HOLDING DOWN THE UNLOCK DOOR KEY, WHICH IS WHAT MY TRUCK DOES. THEN I LET GO OF THE UNLOCK BUTTON ON THE DOOR AND HOLD DOWN THE 2 (UNLOCK,LOCK) BUTTON ON THE REMOTE FOR 30 SECONDS AND NOTHING HAPPENS. THE DOORS SHOULD CYCLE (LOCK, UNLOCK) WHEN THE REMOTE IS PROGRAMMED, BUT NOTHING HAPPENS. I HAVE HOLD IT FOR OVER 1 MINUTES BUT NO RESULTS. I THEN TURN THE KEY ON AND THE TRUCK HONKS TWICE (EXITING THE PROGRAMMING). HOW DO YOU PROGRAM THESE 4 BUTTON REMOTES. I BELEIVE THAT THESE INSTRUCTIONS ARE FOR OLDER MODELS AND FOR THE 3 BUTTON REMOTE BUT MY TRUCK CAME WITH 4 BUTTON REMOTE WHICH WORKS GREAT. IT EVEN TURNS THE TRUCK ON BY PRESS THE RED BUTTON ON THE REMOTE, SO I KNOW THE NEW REMOTE LIKE IT SHOULD BE ABLE TO BE PROGRAMMED SOME HOW.

ANOTHER PERSON TOLD ME THAT THERE SHOULD BE A VALET SWITCH, WHERE IS THAT LOCATED? MY TRUCK HAS NO RED LIGHT ON THE DASHBOARD NOR THE REAR MIRROR SO I CAN'T FIND THE TWO BLUE WIRE THAT RUN INTO THE VALET SWITCH SO I CAN LOCATE IT? I'V LOOKED UNDER THE DRIVE WHEEL AND DON'T SEE ANY BUTTON OF ANY SORT? CAN ANYONE HELP ME ?