What transmission does your trailblazer have ? automatic or manual ? If automatic 4L60E , it has no vacuum hose's ,unless you or someone else modified it . E in 4L60E stands for electronic . Back in the day there were vacuum hose's going to the automatic trans 1 to the vacuum modulator valve .
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What transmission does your trailblazer have ? automatic or manual ? If automatic 4L60E , it has no vacuum hose's ,unless you or someone else modified it . E in 4L60E stands for electronic . Back in the day there were vacuum hose's going to the automatic trans 1 to the vacuum modulator valve .