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03 CTS Engine Failure

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Guest Cadi03CTS

Not sure where else to go for help, dealership will just rob me blind over this problem.

Over the past few months my car has been starting with a weird very low-frequency clicking sound right before the engine would start. It sounded like it was coming from the inside the car, not so much the engine part.

About the same time my car just stalled on me - no forewarning like the erratic rpm or what not, it just died - and wouldn't start back up.

I had the battery disconnected then reconnected after the car stood for about 20 minutes or so, then it would start back up.

FF to now, over the past three days the car has stalled every chance it got.

On the

  • Freeway at 65MPH while accelerating the engine would shut off as if you took the key out.
  • While idling on Park the engine would stop
  • While on park with the pedal depressed at a steady 2500RPM it would stall out
  • While driving at normal speeds about 35MP

While idling the RMP would fluctuate slightly 30% of the time +/-2000 - then it would just shut off, no chocking just a STOP

After that it won't start. Wait 20 minutes or so to cool it down then it would start back up.

I don't know what to do.

I had the car serviced at 60,000

Oil changes are after every 3,000 miles

Fuel only 93 grade

Thinking it might be the fuel pump - but not sure at all....

Does anyone have any ideas?

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To start, I suggest that you read the OBD II codes. Here's how, from http://www.caddyinfo.com/readingcodes.html

For the 2003 CTS Non-Nav, turn on the ignition without starting the car. Push in the F1 and the F6 function keys on the radio at the same time.

For the 2003 CTS with Nav, Press the BAND button and the bottom NAV button to the left of the display, then release.

Does not work on 2004+ models, which require a code reader.

The DTCs (device trouble codes) will scroll across the data display. Write them down and post them here. Then, if it does it again, read the codes again before you shut off the key. The codes will be of the form

PCM P0171 H

What's important are the parts of the form P0171, a letter (B, C, P or U) followed by four numbers, and the letter C or H (for Current or History). For nearly all problems, the DTCs will point you in the right direction.

-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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Guest Cadi03CTS


I did the F1&F6 check and i got a total of 18 codes!

ARS 25752111 0951

CCP 25751076 3230

DDM 25745823 0808

DDS 25748573 248A

DIM 25740336 2080

EBC 25746910 6008

LRP 25745821 0808

MSM 25739645 1676

PDM 25745823 0808

RIM 25744802 2412

RRD 25745821 0808


AMP 25751424 3540

IPC 25742936 2243

IRC 25750438 0801

DNS 22705041 5336

SDM 25753957 F027

vtd 25748932 3010

I don't think these are the codes b.c. when i clicked on the codes i got a second set of codes which followed a bit closer to your format above:

U1016 H

B1327 H

B1004 H

My car died - battery died before i could get the rest out. will have to try again tomorrow.

I appreciate your insight!!! and help!

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Based on your symptoms, it sounds like:

There is no pattern to the problem - making it random.

For starters, with all the codes you are getting - everything including the Radio, & Amp, & Drive Train, I am leaning towards an electrical issue (ie. the battery, and the battery terminals) In addition, I would think the clicking can be something related to the climate control. - If it is indeed an electrical issue, then the clicking can be addressed after the problem is fixed. Then I read that your battery went dead, and I wonder why, and it enforces my belief that it's battery/terminal related.

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