Question about 2000 Cadillac DeVille DTS
On your key is a diode. Ohm test it . Your ignition is expecting to see that ohm. You can try to reset it by turning key on( no crank) for 10 min. Then turn off and repeat a second time. Then try to start,might work. 2 options replace ignition ( not so cheap on this model) 2nd option ohm key and build resistor to match. On steering column there is an orange wire going from column to bottom corner of wire harness above drivers
left foot. Inside that orange wire are 2 white wires. Cut and wire in resistor to the white wires on harness side not column side. System bypassed, now you can make a dollar copy of key not the 50$ key from dealer and never have the problem again
Posted on Mar 14, 2015
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Posted on Jan 02, 2017
the problem is caused by a defective gas gauge sending unit, this part is located inside the gas tank, you must remove the gas tank to replace it.
Posted on Dec 02, 2009
if you have a blown head gasket you would have a miss
the waterpump can look good and still be bad
after you replace the thermostate fill the radiator and leave the cap off start the car let it get too operating temp and check for flow if you have good flow shut the car off and and put a pressure terter on the raidator this will tell of and leaks
Posted on Feb 26, 2009
you can reset the system by turning key to on position for 5-10 mins and then try starting it but its probably a short or grounding prob try the engine to chassis ground
Posted on Oct 03, 2008
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