My 4 wheel drive will not disengage

2004 CHEVROLET SILVERADO
146,000 MILES
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VOLS0428
  • MEMBER
  • 1 POST
I am unable to unlock 4 wheel drive. 2 wheel light will flash but will not engage. Auto light will light solid but truck is still in 4 wheel drive. In Auto mode light will go solid but 4 wheel drive is still engaged. 2 wheel drive light will flash but 4 wheel light will go solid.
Dec 31, 2011 at 4:30 PM
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RIVERMIKERAT
  • ✓Experienced Mechanic
  • 6,106 POSTS
Have it scanned for codes. It needs to be both hard and soft codes.

I will also need to know what model transfer case and which Silverado you have; 1500 or 2500
Transfer case models:
NVG 149-NP3
NVG 246-NP8
NVG 261-NP2
Sep 2, 2020 at 3:34 AM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
do you have owners manual to look up operation and checks?
Sep 2, 2020 at 3:34 AM
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