/en/qa/tag/gmc-sonoma Powered by Question2Answer /en/qa/97634/int-sl-will-not-finish-programming-the-led-does-not-turn-off-during-programming-2002-gmc-sonoma I am trying to program INT-SL+ on 2002 GMC Sonoma however, when I get to Step 8, I start the vehicle as instructed but the LED never turn off. Just keeps flashing. I have tried several things - using the most recent firmware, old firmware. I tried Data-link, hard wired, I have double checked that the wiring is correct. Any advise on what I can do? Service number 002102 086504 GMC /en/qa/97634/int-sl-will-not-finish-programming-the-led-does-not-turn-off-during-programming-2002-gmc-sonoma Sun, 26 Jul 2020 00:44:38 +0000