what is wrong with my 4wd

2000 CHEVROLET BLAZER
130,000 MILES
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AUNTMERNIE
  • MEMBER
  • 1 POST
panel in dash shows to stay in 2H. The car is actually in 4wd. It does not matter which button, auto, 4H, or 4L that I punch. Nothing changes. It is wearing out my tires and plays heck with my gas milage. Nothing I do seems to work. It stays in 4 wd.
Nov 29, 2011 at 9:35 PM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
need to have it scanned for codes
need a scan tool to access TCM codes

possible bad switch or an encoder motor
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Nov 29, 2011 at 9:37 PM
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