Question about 2001 Cadillac DeVille

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2001 caddilac deville dhs shakes when it goes over 60mph and makes thumping noise from rear passanger side when i brake

Shakes when it goes over 60mph and makes thumping noise from rear passanger side when i brake

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  • 4 Answers

Check the U-joints this will give you a thumping sound by running
out of round. Banging on bottom of car.
The noise in the rear could be a bad wheel bearing, I had that
happen when the race of the bearing came apart.

Posted on Apr 22, 2013

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Posted on Jan 02, 2017

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SOURCE: replacing spark plugs

Changing spark plugs in your Cad is not an easy thing. I tried it using the chiltons manual and it took five hours. Just in case you want to try it yourself you will need to start by removing the engine cover (two screws easy to locate). Next step is the tricky and tedious part. A black cylider with small vacuum tubes located at the rear center next to firewall needs to be removed. It is attached to the engine by an somewhat difficult to reach bolt and a almost impossible lower bolt that can be acessed underneath if you can find it and have hand of a ten year old. I removed it from bottom of vehicle than tightened it after from the top this is by far the most difficult of the process watch your knuckles. This vacuum valve is connected to a silver hose which needs to be unscrewed to remove valve two screws attach it from the bottom. This is another difficult one. Make sure the your socket is firmly onto the wrench, one socket remains hidden after it fell off, making a extra trip to the store neccasary after losing it. Move valve out of the way as best you can and what remaing are 8 bolts holding on the "ignition coil assembly". These shoul be taken out in a "W" pattern: top bottom top bottom. Remove these and remove panel another very tight fit. Remove spark plug boots and take out spark plugs and keep in order so that spark plug damage can be assessed according to corrisponding cyclider. Repeat for front plugs and reverse steps to reassemble. Spark plugs come pregaped. Start with the rear plugs, they are the most difficult, and you have a better idea how much time it will take.

Posted on Sep 29, 2008

  • 59 Answers

SOURCE: 2001 caddilac Deville intermittant stalling.

sounds like an IAC motor. that stands for idle air control motor. it adjusts throttle to keep at steady speed. could possibly be throttle positioning sensor though. pay attention to see if it does it worse while mashing breaks because if EGR is stopped up it can cause symptoms similar too.

Posted on Dec 10, 2008

  • 1986 Answers

SOURCE: how do i remove the left rear door panel On a

On the inside trim, you can remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you'll need to manipulate the panel and disconnect the door handle linkage from the door handle and disconnect the wiring for your controls

Posted on Sep 23, 2009

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SOURCE: battery removal 2000 cadillac deville

Its on passenger side under rear seat cushion. Get in back seat FACING rear seatback, grab under lip of bottom seat cushion, and pull straight up. Disconnect seat heater connector (if so equipped) on passenger side and remove seat bottom. Tada! There ya go! Oh... btw. Its a $150 battery due to the venting system designed into it to vent fumes through a tube to the outside world. Thanks Cadillac!!! :(

Posted on Dec 18, 2009

bschilz
  • 2049 Answers

SOURCE: code po741 on a cadillac deville dhs 2001

P0741 Torque Converter Clutch Circuit Performance or Stuck Off

Your car actually has a viscous converter clutch inside the torque converter instead of a (mechanical) torque converter clutch to lock up the torque converter for fuel economy improvement. You will see it referred to as the VCC and/or TCC.....

The TCC/VCC has a variety of components in the system including an electrical circuit supplying the transmission, the apply solenoid inside the trans, the torque converter itself, the PCM that controls the apply, etc. It is impossible to diagnose from afar. Unlikely that it is a "sensor" inside the trans as the PCM controls the VCC apply and uses engine and trans data that it receives from a variety of sources. If a "sensor" had failed the trouble code for that sensor would be setting......

Something as simple as the brake switch can cause the VCC to not apply correctly. There is a safety switch on the brake pedal that activates the brake lights and disconnects the VCC circuit. If it is misadjusted then the trans cannot apply the VCC. Lots of other trouble shooting items on the VCC system. If you don't have a service manual and cannot trouble shoot the system, I would recommend a Cadillac dealer as they have the trouble shooting information for the specific VCC that the Cadillac 4T80E trans has that a trans shop is simply not familiar with. No sense working on the trans until you actually know what is wrong.

Posted on Jan 13, 2010

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