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Why did my car leak oil? 2004 Cadillac DeVille
Hey there. You must have gotten the oil filter double gasket from the old gasket O-ring left on and put a new filter on, and it would not let the new filter seal. Remove the oil filter and check for...
Car keeps saying the starter is disabled
It sounds like the new key needs to be encoded with the powertrain control module (PCM). The original key has a resistor in it with a specific resistance value. If the PCM sees a different resistance value, it will disable...
My car is skipping.
Hello. This can be caused by a number of things. It can be anything from a faulty sensor to a tune-up issue. I usually check the computer for codes and check all of the sensor readings with a scan tool....
digital dash and ac
The A/C cannot be fixed if the controls are inoperative. As soon as the battery is disconnected the A/C will no longer work. The A/C leak cannot be fixed and should not be fixed with J-B Weld. The dash displays...
Tcc solenoid broke .
Your best option is to buy a service manual; it will detail the steps required to replace the TCC solenoids. Unfortunately, YourMechanic does not work on transmissions so it may be necessary to take the car to a transmission shop,...
What other issues could I check, if I changed my coolant temperature sensor and my vehicle is still jumping or missing?
You need to fix that air leak. The best thing to do is buy a new intake boot. If you're short on funds, you can use duct tape or some other strong tape to cover the hole in lieu of...
Air condintioner won't come on.
Hi there, thanks for writing in. In most cases, when the AC or heater is not blowing air, it's caused by an electrical problem with the blower motor or the motor is broken and needs to be replaced. The AC...
rubber gromments not in transmission and screen on bottom of pan. will those rubbers cause a problem
Any foreign material making it's way through the transmission has the potential to cause problems. There is a chance the last person to service the vehicle did not install the grommets for the screens correctly or not at all and...
transmission shifting rough
Hi there, thanks for writing in about your 2004 Cadillac DeVille. Hard shifting can be caused by several items. I don't feel like the pickup screens are contributing to your concern. The transmission uses hydraulic pressure to control the shifts....
Small fluid leak in front after car is shut off and sits,temperature gauge rising.
You should have the cooling system pressure and leak checked to locate the leak in the cooling system and also check to see why your engine ran hotter than normal. This overheating inspection will locate the leak and then a...
Chuging lack of power Cadillac converter is red..
It sounds like you may have two separate issues at play here. If the catalytic converter is cherry red this means it is very hot which is usually a result of a very rich running condition and is most likely...
100,000 mile tune up
Hey there, here are standard recommendations for a tune-up: Inspect the exhaust and fuel system Replace the spark plugs Replace the air filter Replace the transmission fluid and filter Rotate tires Service and clean throttle body Replace seat filters...
Can you tell me how long it would take to replace a 1999 Cadillac Deville alternator
Hello there. The alternator replacement should call for 2.8 hours replacement time. The radiator needs to be removed and the A/C evacuated and recharged. There may be additional part charges for coolant and Freon. If you would like to have...
Speedometer jumps car moves slow
If your speedometer needle or gauge is jumping up and down while the vehicle is moving at a slower speed, two possible issues may have occurred. Either the whole instrument cluster has failed at some point preventing the speedometer from...
Car would not respond when I turned the key...Tried 2 or 3 times same...came back 1/2 hour it is fine.
Hello! An intermittent failure of a start response can be many things - a bad ignition switch, starter solenoid, or in your case - the keys use a "raised-chip" design for security. With years of wear, the key/ignition switch become...
Overheating issue - 2001 Cadillac DeVille
Hi there. There are a lot of things that can cause this to occur. By far the most common failure on this engine that causes these same symptoms is a bad head gasket. This engine is notorious for this. A...
my power steering blocks each time I have to maneuver in a parking, not when I'm just driving
If by "blocks", you mean the wheel turns smoothly then at some point in turning it, the wheel suddenly goes stiff and is hard to turn, it it a common symptom of GM products of that era having a bad...
How can you tell if your alternator is working properly?
Hi, thanks for writing in. Usually this is identifiable by the charging system gauge in your car, which should typically read, at idle, 13.8 to 14.3 volts with no lights or accessories on (although some may charge at a slightly...
Why doesn't my car start up?
Hi, thanks for writing in. It can be either. If the alternator is not charging properly, it can cause even a new battery to drain down. usually when we say "dead battery", it's not so "dead" that there isn't enough...
The car won't start.
Hi there. Assuming that the battery is good, the connections are clean and tight, the replacement starter is good, the security light is turning off. There are several things that still can affect starter operation. If, the vehicle will start...

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