# 2006 Chevrolet TrailBlazer - Codes

**URL:** <https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [March 15, 2019, 11:28pm UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556 "2019-03-15T23:28:53Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![anthony51](https://avatars.discourse-cdn.com/v4/letter/a/eb9ed0/32.png) [@anthony51](https://community.cartalk.com/u/anthony51)\
**Post date:** [March 15, 2019, 11:28pm UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556/1 "2019-03-15T23:28:53Z")

</div>

po171,po300,p1133 need help

---

<div class="post-metadata">

**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\
**Post date:** [March 16, 2019, 1:11am UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556/2 "2019-03-16T01:11:35Z")

</div>

Vacuum leak

---

<div class="post-metadata">

**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\
**Post date:** [March 16, 2019, 12:18pm UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556/3 "2019-03-16T12:18:17Z")

</div>

> [@anthony51](#):
>
> p0171

Find and repair your vacuum leak and the other 2 codes should go away.

---

<div class="post-metadata">

**Author:** ![GorehamJ](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/gorehamj/32/24103_2.png) [@GorehamJ](https://community.cartalk.com/u/GorehamJ)\
**Post date:** [March 17, 2019, 9:07pm UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556/4 "2019-03-17T21:07:15Z")

</div>

This is a very cool post. Shows just how helpful the members can be.

---

<div class="post-metadata">

**Author:** ![TwinTurbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@TwinTurbo](https://community.cartalk.com/u/TwinTurbo)\
**Post date:** [March 18, 2019, 12:07am UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556/5 "2019-03-18T00:07:33Z")

</div>

Describe circumstances leading up to problem. Has anything been serviced on the engine or fuel system recently?

---

<div class="post-metadata">

**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [March 18, 2019, 12:12am UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556/6 "2019-03-18T00:12:08Z")

</div>

why does the general consensus so often seem to be “lean codes = vacuum leak” . . . ?!

I can think of plenty of instances where that wasn’t the case

Just like an evap leak code isn’t always because of the fuel filler cap

diagnosis . . .

---

<div class="post-metadata">

**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\
**Post date:** [March 18, 2019, 12:30am UTC](https://community.cartalk.com/t/2006-chevrolet-trailblazer-codes/136556/7 "2019-03-18T00:30:40Z")

</div>

There was not much to go on with the problem description. There are other things it could be, but a vacuum leak is the highest probability.