Just had my transmission rebuilt about 2 months ago and I went to use 4 wheel drive hit the button for auto and light just blinks and does not engage does the same for 4 wheel high
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1999 Chevrolet 1500 Pickup Question: 4x4 when button is pushed light just blinks and does not engage"
Answer #1pushrod December 08, 2012, 06:48Master
Vacuum problem, switch on transfer case. Range selector actuator motor on rear of transfer case.
Can tap motor with small hammer to see if it will switch. Vacuum problems more likely on GM.
ALL we can do is give suggestions the rest is up to you. Have a mechanic take a LOOK.