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2009 Cadillac CTS Base w/1SA
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4 Posts
Discussion Starter #1
My 2009 base CTS is at 149,000 miles. I'm taking it into an independent service garage to have the following done.

New spark plugs

Replace transmission fluid and filter.

Flush coolant and replace with Dexcool only.

Replace differential fluid and additive.

Is it important that the coolant be replaced with the Dexcool or can you use the universal coolant?

Is there any other maintenance that I should have done?

Thanks
 

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'14 CTS-V LongRoof; '16 ATS-V Sedan,' 04 Trailblazer 4x4; '10 CTS LongRoof gone but never forgotten
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14,819 Posts
I can't give a definitive answer with technical backup, but if the Dexcool has held up well then why "reinvent the wheel"? That is what I would use personally.
 

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97 Eldo ETC,98 STS,04 SRX N*,06 STS N*,14 CTS VSport Premium, 17 CTS Vsport Prem Lux
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1,101 Posts
The only other fluids I can think of are the power steering and brake fluids. Have you had them changed recently?
 

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2014 CTS Coupe 3.6 RWD Perfomance Pkg, TriCoat White Diamond
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1,689 Posts
when was the last time you had an oil change?
 

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2008 CTS
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213 Posts
The car doesn't have a true PCV valve but it does have a sort of orifice tube in the driver's side valve cover. You might want to replace that and the air filter as well. Clean the throttle body.
 

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2009 Cadillac CTS Base w/1SA
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4 Posts
Discussion Starter #8
Someone at Cadillac mentioned the throttle body cleaning. I'm thinking maybe I should just take it to Cadillac. Thanks Elvis
The car doesn't have a true PCV valve but it does have a sort of orifice tube in the driver's side valve cover. You might want to replace that and the air filter as well. Clean the throttle body.
 

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08 White Diamond CTS DI RWD FE2 all options
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2,541 Posts
Change all fluids and spark plugs. If you have not done so change filters and oil. That's all.
 
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