Questions & Answers

So V4.18 should work?

+1 vote
Does that mean my unit is defective? How long should it be before the red LED lights?
related to an answer for: Can't get the red LED to light to program module
asked Dec 2, 2013 in GMC by anonymous

1 Answer

+1 vote
 
Best answer

Max 30 seconds and the LED should be blinking.

4.18 will not work. you need MAX 4.06 or the latest GM firmware. The 4.18 firmware does not support the old J1850 data-bus.

answered Dec 2, 2013 by Robert T (300,340 points)
selected Dec 3, 2013 by Robert T

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