Code p 0030 refers to heated oxygen sensor (HO2S) 1 bank 1 -heater control-circuit malfunction
code p 0039 refers to turbo/super charger bypass valve , control circuit --range /performance problem===causes --wiring--- bypass valve
code p 74 refers to outside air temperature sensor--circuit intermittent===causes ---wiring---poor connection---out side air temp sensor---ECM
code p 0098 refers to intake air temp (IAT) sensor 2 --circuit high input===causes --wiring short to positive ---IAT sensor---ECM
SOURCE: SERVICE DRIVER CONTROL ????????
I guess the right word is . Service ride control.
Service ride control. come because, Is there a computer for all the suspension and esteering.
Level sensor if the car use air suspension.
Or electronic shocks. any of those are giving the message.
You need to do a computer diagnostic. On a repair shop.
SOURCE: How Do I remove the door panels in my 94 cadillac deville concours?
u have to remove the panel that has the door handle in it, remove the panel which has the window and the seat adjusters, unplug the wires and just lift the door panel and there u are.
SOURCE: locked out of the trunk 94 cadillac deville
Is there a trunk release button in the glovebox?
SOURCE: cruise control doesnt work,,,i there any fuse for
Cadillac's of this year have been known to have the wire(s) fromt he cruise control break in the steering colum. This is due to the tilt wheel moving up and down over the years. You should be able to either repair the broken wire or get a used unit (turn signal/cruise) and wiring harnes at a salvage yard. The wiring runs along the steering column to a connector on top of the column about half way down.
Check your fuses first. I believe the cruise and a couple of other accessories are on the same circuit. Is there anything else that doesn't work? (i.e. cigarette lighter, dome lights...) If you have the owner's manual that would help OR a trip to the public library in the auto section...Hope this helps.
SOURCE: I have a 94 Cadillac Deville Concours that when
hole in radiator. water pump leaking. leaking coolant into cylinder head from bad gasket. bad radiator cap can cause it to loose coolant . also check the hose to overflow resivore.coolant could be boiling away due to overheating. check the thermastat and the fans. all fuses and relays.as far as the codes check the wiring. if u have to unplug all the connectors and remove the loom and visualy inspect the wiring harness. i had to do this on my 93 deville. i found the reason my ac wasnt working my cruse control . and throttle position sensor. my temp sending unit was seting the idiot light . and the alternator was seting the charge light. all becase of a bad spot in the wiring. i seperated the wiring and tapped each individual wire up. re loomed it and taped over the loom . now my car runs and drives as if i drove it off the show room floor.amazing what a few hours of checking and repairing a few wires willl do. the cadillac dealer ship estimated around $2,000 to fix my problems depending on hours involved at $100 an hr. it cost me 2 rolls of electrical tape and $10 in loom. and like i said a few hours.
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