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Q:

Check engine light came on and the service code came up as U1000. Any ideas?
on 2002 Chevrolet Trailblazer

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
No state of health U1000
(1) Answer
How many modules have the U1000 code set in them, and what module does it say isn't reporting? Please list evrything you can and I can try to get you an answer today or tomorrow.