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2018 CTS 3.6L AWD Premium Luxury, Previous: 2009 STS 3.6L AWD, 2003 DTS 4.6L
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379 Posts
Discussion Starter #1
Hi,

I recently (this morning) noticed that the Torque Converter Clutch on my '03 DTS (with 37K miles) is not locking up. I have no codes (yet), the fluid is at 99%, never changed, full and looks clean. I've checked the cruise control brake pedal switch and readjusted it to no avail.

Anyone have any consoling thoughts or ideas???

Thanks,

--John
 

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Registered
2018 CTS 3.6L AWD Premium Luxury, Previous: 2009 STS 3.6L AWD, 2003 DTS 4.6L
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379 Posts
Discussion Starter #3
That's inside the side over correct? Have many seen the solenoid go bad? Update: This morning the TCC locked up everytime...............
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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86,976 Posts
I think the solenoid is in the side cover, but not positive. The fact that it is now working may be the switch as mentioned in your other post.
 

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2018 CTS 3.6L AWD Premium Luxury, Previous: 2009 STS 3.6L AWD, 2003 DTS 4.6L
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379 Posts
Discussion Starter #5
Ranger, point taken. But even when the TCC did not lock up, the cruise control would still disengage by tapping the brake pedal (same switch per the FSM).
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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86,976 Posts
Yeah, I thought of that. Maybe just a loose or oxidized connector that you inadvertently fixed by pulling it.
 
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