1999 Chevy Astro key fob won't program

Tiny
ANDRESATS
  • MEMBER
  • 1999 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 146,000 MILES
I just got a new fob for my van. I had it tested (using a GM fob tester) and saw the lights light up(on the tester) when the buttons were pushed on my fob. I then followed the instructions to short pin #4 to pin #8 on my OBD II aldl connector (top row, 4th from left and very right). The locks cycled as expected and then I pressed the fob buttons (lock & unlock together) for more than the requested 10 seconds, but nothing happened. I repeated the attempt with the ignition on and off with no success. My Snap-On Modis doesn't help me here either. Suggestions?
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Saturday, February 9th, 2008 AT 2:55 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Here's what I came up with...


http://www.2carpros.com/forum/automotive_pictures/62217_Fob1_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_Fob2_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_Fob3_1.jpg

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Saturday, February 9th, 2008 AT 3:05 PM
Tiny
ANDRESATS
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  • 2 POSTS
Merlin2021,
I will take the diagnostic proceedure to work with me, tomorrow, and give it a try. Thanks for getting back to me.
//andresats//
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Sunday, February 10th, 2008 AT 2:56 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Let me know the results please.
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Sunday, February 10th, 2008 AT 4:23 PM

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