# 2010 Cadillac CTS Sedan P0300/P0017

**URL:** <https://community.cartalk.com/t/2010-cadillac-cts-sedan-p0300-p0017/129250>\
**Category:** Maintenance/Repairs\
**Tags:** cts-sedan, cadillac\
**Created:** [November 20, 2018, 8:44pm UTC](https://community.cartalk.com/t/2010-cadillac-cts-sedan-p0300-p0017/129250 "2018-11-20T20:44:39Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Brad37](https://avatars.discourse-cdn.com/v4/letter/b/eb9ed0/32.png) [@Brad37](https://community.cartalk.com/u/Brad37)\
**Post date:** [November 20, 2018, 8:44pm UTC](https://community.cartalk.com/t/2010-cadillac-cts-sedan-p0300-p0017/129250/1 "2018-11-20T20:44:39Z")

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I am in Canada and have 175,000 kms (under 110,000 miles) on my 3.0L. My amber engine light occationally illuminated and dealership said it was showing Tech Codes P0030 and P0017. As a result they are quoting me $4,500 to fix it, which involves replace the timing chain. Am I nuts or is that a heck of a lot to do that?

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [November 20, 2018, 9:52pm UTC](https://community.cartalk.com/t/2010-cadillac-cts-sedan-p0300-p0017/129250/2 "2018-11-20T21:52:06Z")

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First off, the P0030 is an oxygen sensor code. Cheap and easy to fix. The P0017 is the code saying the timing chain is worn out. That is a big job on an engine with 4 cams and a large timing chain. That said, why not take it someplace other than a dealer? Get a second estimate from a good independent shop. It will still be expensive but not $4500 expensive.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [November 20, 2018, 10:44pm UTC](https://community.cartalk.com/t/2010-cadillac-cts-sedan-p0300-p0017/129250/3 "2018-11-20T22:44:44Z")

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> [@Mustangman](#):
>
> The P0017 is the code saying the timing chain is worn out.

+1  
But, that also leads to a question regarding how often the OP changed his engine’s oil–in terms of both odometer mileage and **elapsed time**. A worn-out timing chain at 110k miles is rare… as long as the oil is changed as it should be.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [November 20, 2018, 11:08pm UTC](https://community.cartalk.com/t/2010-cadillac-cts-sedan-p0300-p0017/129250/4 "2018-11-20T23:08:18Z")

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The timing chains in these vehicles are not long lived

You’re lucky you got then miles you did.

Just enter 2010 CTS timing chain in your search engine.

Tester

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [November 20, 2018, 11:24pm UTC](https://community.cartalk.com/t/2010-cadillac-cts-sedan-p0300-p0017/129250/5 "2018-11-20T23:24:03Z")

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> [@Tester](#):
>
> The timing chains in these vehicles are not long lived

Did GM place their **Mark of Excellence** on those vehicles?  
😏