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Cadillac STS/STS-V Maintenance & Repair

100 messages,  Last post on Jul 31, 2011 at 11:37 PM

You are in the Cadillac STS/STS-V Forum.

What is this discussion about? Cadillac STS, Cadillac STS-V, Sedan

Messages Page 10 of 10

#91 of 100 94 STS No PCM Data IO34 error code by jjbuckley

Jun 25, 2010 (4:13 pm)

Hi all, hope someone can help with my saga.
 
94 STS 134K miles was running great except for bad heater blower motor.
 
Went off for long weekend, came back and started the STS to go to store, car ran horrible, a bad stumble/hesitation on acceration and rough idle. No codes set.
 
Came home and decided to pull battery cables and clean and check for proper grounds.
Started car got error codes and in the DIC it said "traction disabled" Stop engine, low oil pressure. Checked codes and got IO34 loss of PCm data, IO52 keep alive memory, TO72. went in to OBD to clear codes and of course I have a "No PCM data" all paramaters are there, ABS, SIR, ACP, TCS, RSS, went in to each one to the clear codes and did that now I just have the IO 34 code and dashes in the MPG and Range Displays. No info in the DIC from any PCM parameter ie: Temp, MPg...
 
The car will start and run, but only in the default mode of 2nd gear only, bangs very hard when you put it in gear.
 
I checked the main grounds on each side of the radiator, replaced the battery cables still have the problem.
 
I checked the voltage at pin M of the ALDA connector to ground, got 3.79v to 4.29v it varies constantly. I did this to see if the data line was locking up.
 
Decided to swap out PCU with a friends, his STS was rear ended but the front end is ok, still have the same problems, but I got a ACP code and dashes in the Temp display with his PCU, car would start but still has the problems, swapped back to my PCU.
 
I then swapped the IPC out still have the same problems, I put mine back in.
 
I am at a stand still I do not know where to go next, any ideas would be great.

#92 of 100 Is this used STS a good deal? by elburn

Jul 30, 2010 (5:31 pm)

I have come across a Cadillac Seville STS. It is a 1998,34,000 miles. Selling for $5800. What do you think? Is this a good deal?

#93 of 100 98 Cadillac STS 4dr by torrico

Feb 22, 2011 (10:53 pm)

98 STS 108000 miles. Recent headgaskets and inserts done at dealer. Car run and drives.
Car needs some work. Interior and exterior in good shape. anyone need a good parts car or fixer upper. Asking 2000.00

#94 of 100 car will not start by nightrider1969

Feb 24, 2011 (6:09 pm)

My 2003 caddilac sts will not start i drove home from work today and the car was fine when i parked it i went to start the car a hour later and when i turned the key it stared clicking the lights went dim and then nothing i tried to jump the battery and nothing. is ther a fuse that might be blown please help.

#95 of 100 A/C Leaks Water Into Passenger Floorboard by homewoodman

Jun 19, 2011 (9:09 am)

Hello everyone. I have a 2005 STS with 30,000 miles. The only problem I've ever had with the car is replacing the battery. I am having a problem with the A/C discharging water into the passenger floorboard. I can usually hear water "gurgling" somewhere in the dashboard just before the water flows. I have read that the discharge hose is probably clogged. Where can I locate this and what is the best way to unclog the hose? I have read about using compressed air and wire coat hangers. Please advise!!

#96 of 100 Re: A/C Leaks Water Into Passenger Floorboard [homewoodman] by gmcustsvc

Jun 20, 2011 (1:19 pm)

Replying to: homewoodman (Jun 19, 2011 9:09 am)
homewoodman,
 
Please keep us posted when the issue has been taken care of. If you have any questions or concerns please feel free to contact us directly.
 
Thank you,
Caron, GM Customer Service

#97 of 100 Timing chain failure on 2005 Cadillac STS by janette12

Jul 31, 2011 (11:37 pm)

#98 of 100 Timing chain failure on 2005 Cadillac STS by janette12

Jul 21, 2011 (6:25 pm)

We have a 2005 Cadillac STS 3.6L V6 with 86,000 miles on it. The timing chain tensioner failed causing the timing chain to break and now we have been told the engine needs to be replaced. We just bought this car in March so really have no choice but to fix it. Our mechanic says this seems to be common but we can't find any TSB's regarding this. Anyone have any suggestions?

#99 of 100 Re: Timing chain failure on 2005 Cadillac STS [janette12] by gmcustsvc

Jul 26, 2011 (6:56 am)

Replying to: janette12 (Jul 21, 2011 6:25 pm)
janette12,
 
I apologize for the problems you are experiencing with your vehicle. Could you please email me your VIN? I would like to look further into your situation.
 
You can get my email by clicking on gmcustsvc.
 
Thank you,
Caron, GM Customer Service

#100 of 100 Re: Timing chain failure on 2005 Cadillac STS [janette12] by jpf

Jul 31, 2011 (11:37 pm)

Replying to: janette12 (Jul 21, 2011 6:25 pm)
Check out forums for other GM cars with 3.6L engine, e.g.'s GMC Acadia; Cadillac CTS; Chevrolet Traverse; etc. All of them have separate discussions about this engine's problems. Good luck.

Messages Page 10 of 10

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