20 Most Recent 2002 Cadillac Deville - Page 6 Questions & Answers


When you replaced the back plugs (fun job, right?), you may have damaged or disconnected a vacuum line or disturbed an electrical connection in the area - check all of these. Other probable causes are a malfunctioning or dirty EGR valve or idle air control (IAC) motor, or a bad throttle position sensor (TPS). These devices may need to be checked, but usually don't fail without warning - check for error codes (DTCs).

2002 Cadillac... | Answered on Oct 07, 2014


Many Caddys have/had small "radiators" for heat to the rear passengers located under the front seats. Most shops (or owners) never check them or know they exist.

2002 Cadillac... | Answered on Oct 05, 2014


Use the Eng/Met button on the left side of the dash.

2002 Cadillac... | Answered on Sep 28, 2014


You can try resetting any vehicle error codes (DTCs) with a code scanner. Depending on which instrument panel (IPC) you have, you may be able to put your IPC in diagnostic mode and reset any DTCs from there. Simultaneously hold the top of the Info button and the On/Off buttons for several seconds to go to diagnostic mode; then use these buttons to navigate the options showing on the IPC. Before resetting the DTCs, make sure you record the DTCs - you can look them up on the internet. If resetting doesn't solve your problem, the IPC is probably toast.

2002 Cadillac... | Answered on Sep 28, 2014


The only way to be sure if a fuse is blown is to remove it and check it with a multimeter - looks can be deceiving! There are several radio options for your car, some which also involve an amplifier with a fuse separate from the radio. Since you did not indicate which option you have, the place to start would be fuse 21 in rear fuse block (under rear seat). The amp fuse would be 63. See the diagram in the fuse box for locations. If a fuse is not the problem, your radio is probably toast.

2002 Cadillac... | Answered on Sep 28, 2014


No screw - fully computer controlled. Also, there is no idle control sensor - just a throttle position sensor (TPS) and an idle air control (IAC) motor. If you are replacing the IAC, clean the throttle body ports VERY carefully using a recommended solvent.

2002 Cadillac... | Answered on Sep 27, 2014


GM hid it on the engine at the passenger side front, down below the oil filler cap.

2002 Cadillac... | Answered on Sep 27, 2014


Have you tried smacking the blower motor? If it starts running after you hit it, replace it.

2002 Cadillac... | Answered on Sep 10, 2014


Usually it's located on the left side under the dash.

2002 Cadillac... | Answered on Aug 26, 2014


start with fuel then spark plugs , anything else you need a scanner that reads live data to check the sensors for proper operation.

2002 Cadillac... | Answered on Aug 17, 2014


How to disassemble

Didn't think that out did you

2002 Cadillac... | Answered on Aug 16, 2014


Intake need cleaning

2002 Cadillac... | Answered on Aug 12, 2014


I wish I could help but I'm still working on my trans problem. if I can find it in my book I will put it up so you can see it. sorry

2002 Cadillac... | Answered on Aug 10, 2014

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