2004 Chevrolet Trailblazer Q&A

2004 Chevrolet Trailblazer Question: 4wheel drive works in 4 lo and 2 wheel drive but not 4hi or AWD , Why?

No service 4 wd indicator comes on ,computer reflashed because of engine light and loss of engine power light coming on . Will occasionally go into 4 hi and AWD .lights do not come on in AWD or 4 Hi when switch is changed only on occasion seems like when it feels like changing . -
Answer 1
sacn for codes and test switch -