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04 cts 3.6
5 Posts
Discussion Starter · #1 ·
I have a CTS 04 and the check engine light has come on twice about 6 months apart.

I used on OBDII gadget i got off ebay to diagnose and reset the code with an Android app called "Torque"

My 1st question is- when should i worry about getting this checked by a shop?

i found the best info here:
im going to check the thermostat and engine temp by dash and app to see if its warming up properly, it must be, it worked all winter.

2nd question- how much is new thermostat and is ebay the cheapest/good place to get one?
3rd question- should i just take it to a shop because i have no business doing it?
( i have no engine skills, only stereo installs, lights, minor body work)

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