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I have a 2005 Trailblazer LT. It runs fine and when I started it up this morning, the $x$ Service light was on, ABS, Break lights all on, The cruise control stopped working, the heater/AC stopped working.. all at once, . Could it be the BCM? A ground issue? I checked all the grounds and they look ok... Checked all fuses, both under the hood and under the rear seat, all good. All connections are good and tight, etc.
I switch the 4x4 to AWD and 4HI and it works.. Jumped the blower motor and it works. HELP HELP HELP
 
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