Question about 1999 Cadillac DeVille
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Posted on Jan 02, 2017
I had that same problem and it took me forever to figure out what was wrong. You are probably using an aftermarket key as was I. The stupid little plastic/metal chip in the shaft of the key is for the security system. Sometimes if you insert the key and turn too fast it sets off the security system. To solve the problem go get another key made from a different key maker, they cost around $15-20. Or, insert the key slowly and turn the ignition slowly. Or go get a good key from the dealer, I've heard it may be ~$50 for this key but it should work the best. FYI I still just use my aftermarket key and just deal with the occasional no start wait 3 min ordeal. Good luck.
Posted on Feb 10, 2009
There's a blower motor (fan) under the hood and up against the firewall near the center of the car that takes some work to remove. It has gone out in the last 2 of my 4 Cadillacs. Turns out if you're not real careful with the positioning of the spark plug wires they will brush up against it, and if one of them gets cracked or brittle it will "arc" and short out the blower motor. The a/c compressor should still come on (you'll hear a click when it engages) but you won't get any air blowing into the cabin, hot or cold.
The part was like $200 stock (year 2000 prices) and it took about an hour to remove it. My Caddy at that time had this damn strut bar going across the engine bay which we eventually removed to get to the blower motor.
Posted on Apr 09, 2009
First, provided their are no visible coolant leaks and/or loss of coolant with no signs of leaks, I would thoroughly flush cooling system and replace coolant, then check and/or replace thermostat (you can place thermostat in boiling water to check for proper function), if you have tried these 2 steps and still are experiencing overheating you may need to replace your water pump which can be a tricky job if you're unfamiliar and try to do it yourself, however, I could walk you through it if necessary. Also visually check your radiator hoses for bulges, wear ,etc along with heater hoses etc. You may want to also check radiator fins to see if they are dirty/obstructed and clean if necessary. Let me know if I can assist you further and how it works out
Posted on Aug 30, 2009
SOURCE: security system for automobile
u can't just clip the wire however you can install a resistor that equals the value of the key into the anti-theft module to bypass it.
Posted on Oct 05, 2009
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