# 02 Trailblazer 4WD control switch

**URL:** <https://community.cartalk.com/t/02-trailblazer-4wd-control-switch/39523>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, trailblazer\
**Created:** [November 15, 2009, 5:13pm UTC](https://community.cartalk.com/t/02-trailblazer-4wd-control-switch/39523 "2009-11-15T17:13:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mjschuller55](https://avatars.discourse-cdn.com/v4/letter/m/5daacb/32.png) [@mjschuller55](https://community.cartalk.com/u/mjschuller55)\
**Post date:** [November 15, 2009, 5:13pm UTC](https://community.cartalk.com/t/02-trailblazer-4wd-control-switch/39523/1 "2009-11-15T17:13:28Z")

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4WD switch does not illuminate and will not switch to any seletction. 15 amp 4WD fuse is okay.

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<div class="post-metadata">

**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [November 16, 2009, 3:33am UTC](https://community.cartalk.com/t/02-trailblazer-4wd-control-switch/39523/2 "2009-11-16T03:33:40Z")

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Remove (pry out) the switch module and look for disconnected soldered connections.

If all good there, check for a disconnect at the actuator at the transfer case.