2003 cadillac cts starting problems

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  • 3 Post By AAIIIC
Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, 2003 cadillac cts starting problems in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; hi everyone! im a little new to this. but my 2003 cts won't start. if i give it a shot ...
  1. #1
    joeykrebs is offline Cadillac Owners Member
    Automobile(s): 2003 cadillac cts
    Join Date
    May 2014
    buffalo ny

    2003 cadillac cts starting problems

    hi everyone! im a little new to this. but my 2003 cts won't start. if i give it a shot of ether it will kick over and stay running. so i checked the relay and fuses for the fuel pump....relay is clicking, fuses are good. changed out the filter. im guessing there's a loose wire on the sending unit or connection to. so last night after work i went to drop the tank....@#%&*%% omg!!! it looks like a #%&%%% to do lol. sorry im passionate. so someone please tell me there's an access cover to the sending unit and me dropping the drive shaft and exhaust is just a bad dream. help!?!?

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  3. #2
    libbysman is offline Cadillac Owners Fanatic
    Automobile(s): 1997 catera/03 CTS
    Join Date
    Jan 2009
    Vancouver, Canada

    Re: 2003 cadillac cts starting problems

    Joeykrebs: I know the pain you feel. I just got rid of my 97 Catera that went through 3 (Bosch) fuel pumps in 5 years. I now have a 03 CTS. After the first replacement failed I cut a round hole in the trunk floor (about 10") right above the access hole where the pump is located. That eliminated the need for dropping the gas tank etc. One has to keep in mind that the hole needs to be resealed very tight to prevent fumes from getting into the cabin. Good Luck, Brian

  4. #3
    dannycop is offline Cadillac Owners Member
    Automobile(s): 2004 CTS
    Join Date
    Mar 2014

    Re: 2003 cadillac cts starting problems

    My friend has an 05 cts, was having similar trouble. We got to looking at the battery and noticed it was 650 cranking amps, he put a 850 in and car starts great.
    Worth a look.

  5. #4
    TF Eftusk is offline Cadillac Owners Member
    Automobile(s): '05 CTS 3.6l
    Join Date
    Jan 2014
    Waxahachie, TX.

    Re: 2003 cadillac cts starting problems

    So you weren't getting fuel then?

  6. #5
    outsider is offline Cadillac Owners Connoisseur
    Automobile(s): 87 Brougham, 1969 Calais, 95 FWB, 05 CTS, 07 SRX
    Join Date
    Sep 2009
    Buxton, Maine, United

    Re: 2003 cadillac cts starting problems

    Try a fuel pressure gauge. They aren't expensive and I believe you can rent them from most parts stores.

    You can also have someone listen for the fuel pump kicking on when you turn the key to run (not start) to know if it's running.

  7. #6
    Aurora5000's Avatar
    Aurora5000 is offline Cadillac Owners Fanatic
    Automobile(s): 2006 STS V8 Blackberry,2004 CTS 3.6 Loaded, 2016 SRX LOADED
    Join Date
    Oct 2003
    Tornado Alley Oklahoma City

    Re: 2003 cadillac cts starting problems

    Replace Battery...

  8. #7
    AAIIIC's Avatar
    AAIIIC is offline Super Moderator
    Automobile(s): '05 CTS-V
    Join Date
    Aug 2007
    Where the Navy takes me...

    Re: 2003 cadillac cts starting problems

    Quote Originally Posted by Aurora5000 View Post
    Replace Battery...
    Do you own stock in a battery company, or is there some other reason you've posted this same worthless advice in multiple threads? joeykrebs' engine will start if he gives it ether; if it starts, the battery ain't the problem.
    outsider, Argent1 and mattt0305 like this.
    '05 Stealth Grey CTS-V, 19x8.5/10" CCW T140s with Toyo Proxes T1 Sports (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...

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