2007 Hummer H3 Q&A

2007 Hummer H3 Question: I have a 2007 Hummer H3, driving in 4 wheel high it quit pulling had to put it

in 4 whhel drive high lock to continue any idea what this is and estimated cost to repair? -
Answer 1
maybe you have to have it checked first -
Answer 2
scan modlues for codes and post so we can adv -
Comment 1
I took it to a dealer and who test drove it. It didn't at up and the scan only showed a themostat code which wold not cause this problem. It did it again on the way home and will know only go in high lock. -
Comment 2
Same thing seems to be wrong with mine, even the sev temp light. Backing up one day I thought it popped out of 4x4 lock but the next sharp turn I knew it didn't. Then it popped and thought something went out going forward. Next day it pulled to the left like mad, thought I had a flat tire(since me low indcater light is always on)stopped to look but nothing to see. How do I get this thing out of 4x4 lock? -