1999 GMC Suburban 4 wheel drive wont lock in

1999 GMC SUBURBAN
136,000 MILES • V8 • 4WD • AUTOMATIC
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DAVID1985
  • MEMBER
  • 1 POST
when i put the truck in nutral i hit the 4w high button and the 4w auto button and it does nothing but flash on the light when i hit the 4w low button it trys to lock in but just wont lock in i pout a brand new acuator in it and still nothing is my 4w drive broke or is it something i can fix
Jun 30, 2010 at 7:26 PM
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RICHZOMBIE
  • ✓ASE Certified Mechanic
  • 173 POSTS
  • ASE Certified Mechanic
Install a new transfer case actuator, P/N 12474401
Also replace the poppet (Teflon(R)-coated shift detent plunger)
Jun 30, 2010 at 8:59 PM
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