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Discussion Starter · #1 ·
2009 Enclave CXL AWD. 162,000 miles
Code for transmission- replaced
Code for timing chains- replaced
Codes for all 3 cats and 4 O2 sensors
KYB shocks and struts and entire front suspension
Entire brake system
New tires
New coils/plugs
All in 4 months…………….
 

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Different maintenance?
Im about to hit 180,000.
I replaced all my O2 sensors at 100,000. Along with plugs, front brakes, etc.
Ive also replaced front suspension parts before they failed or mileage wise.
I check oil level weekly.
Do trans fluid drain/ refills 'often'.
Ive posted my mileage posts.
Clean tb every oil change, etc.
Knock on wood, vehicle is running great. Get 23-26 mpg on my weekly work commutes.

In your case id say you waited too long on some items and they all had to be replaced at the same time.

Chain- monitor oil levels. The early yr models very sensitive to oil levels.
 

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Ahhh... got ya.
09s very sensitive to oil levels. 3000 to 5000 max oil change intervals.
 

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I have a 2009 Enclave with 95,000 miles. I did only one oil change at 4,100 miles, and the rest were at about 3,000 mile intervals; all using full synthetic. With this engine I'd never go over 5,000 miles - never. Too many had timing chain issues - even GM recognized the problem with a recall to reset the OLM.

I'm old school and believe in 3,000 mile oil changes since I do a lot of driving in traffic. Sure the oils have gotten better, but on the other hand there are the Ivy League MBAs at GM that are constantly looking at ways of cutting costs in building engines too. They try to design them to just get through warranty using cheap parts from China. Maybe more oil changes might prolong the life of the engine.
 
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