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  1. Fantastic gas mileage on highway trip - 2008 DTS

    Cadillac DTS Forum 2006 through 2012
    Just some thoughts and comments. Did you calculate this mileage or take it off the dash computer? All the Cadillacs I am familiar with have had very accurate computer readouts - gallons used to pump readouts gives accurate mpg (2 Chevrolet computers give less used than pump fill-up and high mpg...
  2. 2006 DTS - poor fuel economy

    Cadillac DTS Forum 2006 through 2012
    Re: DTS terrible fuel economy Some thoughts - used to get 17-18 mixed interstate local with 08 base DTS prior to fuel pump relay issues and FP replacement; noticed lately computer mileage is considerably lower 15 (-). Highway trip could get about 24 or so. My father in law's DTS III (both an...
  3. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    Received the latest fuse box configuration for my car last Saturday and installed on Monday. Seems to be running OK but no long trips yet. Two items of interest - 1) The PN on the fuse box label is the same as the one on the original burnt up fuse box 13599601 - it does have what appears to be...
  4. 2007 DTS low fuel warning

    Cadillac DTS Forum 2006 through 2012
    For those that are skeptical about possible damage from running low on fuel, please refer to my thread on fuel pump relay operating temp. and the possible effects on the rear fuse box from running pump too warm. Remember the pump is immersed in fuel for cooling until the tank gets empty. There...
  5. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    As recommended above have wired the Delco relay into the fusebox relay socket with a dedicated fused 12V supply to pin 30 of the relay and a fused lead to pin 85 of the relay just in case something comes loose. Had to file down 1/4" spade lugs to properly fit the relay pin sockets in the fuse...
  6. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    Jim, The above relay, D1786C is the 3rd replacement from GM for the original fuel pump relay (I replaced that relay with the D1786C relay before I replaced the fuel pump) that burned up. In the process it also burned up the internal contacts in the fuse block, which is what I will eventually...
  7. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    That is great info - will try to work up something. One of the problems I see is the wiring in the wafer inside seems to be the heating area, along with the slide on contacts above that the relay/fuse slides into. Presently have box pretty well disassembled. Info received today indicates that...
  8. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    Very good read - wish I had seen that before I replaced the fuel pump, although that could have been the start as well as the original coil relay heating mentioned in the Lucerne thread. Also when I first replaced the original relay 15328866 I was told there were 3 number changes from original...
  9. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    The latest - per several inquiries the correct replacement for the "F Block" original PN 13599106 for my vehicle is 19116810. After several attempts to order from dealers and online none are available and there is no expected release date from GM. Unit from car is burnt internally at the...
  10. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    The latest - tried to read voltages with engine running and during process engine shut down, no fuel pump power. Got it running again subsequently, but can't depend on it. Presently trying to get into rear fuse/relay box p/n 13599106 on label; having trouble getting the 3 connectors off the...
  11. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    Checked resistance from relay(at bottom of rear fuse box intermediate section - off base attached to floor) to FP connector and FP connector to ground. These look ok less than 1 ohm. Could not read to battery connector from relay to fuse with ohmmeter for some unknown reason. Drove it about...
  12. Front suspention sound loose

    Cadillac DTS Forum 2006 through 2012
    Might also be the Plastic on the front end (the DOM on bottom and wheel well liners). On the 08 DTS I have noise from the plastic pin holes in the pieces being oversize. Dealer replaced pins several times during warrenty with no permanent success.
  13. Fuel pump relay operating temperature

    Cadillac DTS Forum 2006 through 2012
    Once again looking for some info and experience. 08 DTS -just replaced fuel pump, relay and fuse (fuse not blown but showed some discoloration); relay burnt up thru fuel contacts. Replaced pump; it was running but still getting hot so went with a new pump. Still getting warmer than I like...
  14. alternator(generator ) replacment on 2008 DTS

    Cadillac DTS Forum 2006 through 2012
    Trying to replace an alternator on a 2008 DTS - have 2004 factory manual and early Haynes. Apparently the radiator tie bar is installed differently and appears to be tack welded to the front grille support. Kmow I have to get radiator, fans out of way. Any info, repair instructions would be...
  15. Installing a garage door opener in DTS I (none installed)

    Cadillac DTS Forum 2006 through 2012
    Just programmed a button for my father in law's GDO (rolling code) - it took 3 round trips to GDO operator and back to car to get it programmed. Must be timing out before the code match is reached but it finally took. Could not hold hand held remote up to car GDO as in earlier models. Had to...
  16. How To check for Diagnostic Trouble Codes

    Cadillac DTS Forum 2006 through 2012
    This was posted in 98 -2005? forum but do not have the name at hand to give proper credit for the information. DTC display; 1998-2004 Seville and 2000-2005 Deville with 3 buttons on the RH side of DIC Use the 3 switches located to the right of the Driver Information Center (DIC) to activate...
  17. How To check for Diagnostic Trouble Codes

    Cadillac DTS Forum 2006 through 2012
    I also have the CP9145 - and apparently have the Canadian interface on 2008 DTS I, since it doesn't look like the unit connector. If anyone hears the add-on unit becomes available, please let us know. If you have Onstar service, you can sign up for diagnostic reports monthly by email - all you...
  18. Installing a garage door opener in DTS I (none installed)

    Cadillac DTS Forum 2006 through 2012
    Re: Installing a garage door opener in DTS I (none installed Have to take down the center over head console with the map lights and fish out the harness (apparently that was the hardest part along with the fact that there is no working room inside the recess). The unit retails for about $400...
  19. Installing a garage door opener in DTS I (none installed)

    Cadillac DTS Forum 2006 through 2012
    Re: Installing a garage door opener in DTS I (none installed Job complete - I didn't do it. Apparently not too difficult done, while the body shop was correcting rear door handles that were hard to operate -wouldn't open doors (adjusted outside door handle linkage per a service bulletin for...
  20. Installing a garage door opener in DTS I (none installed)

    Cadillac DTS Forum 2006 through 2012
    Re: Installing a garage door opener in DTS I (none installed Couldn't figure out how to edit so I'll just reply to myself. Owner's manual calls the GDO a "Universal Home Remote System" if the garage door opener wasn't recognized. Thanks.
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