2001 Cadillac DeVille - Page 3 - Answered Questions & Fixed issues

The sensor is in the bottom of the coolant tank on the passenger side of the car. My low coolant light stayed on so I cut the wires and twisted them together. You cant buy just the sensor. You have to buy the whole tank. I dont have any coolant leaks so I just by passed the sensor.

The light is supposed to stay on, when the key is used the system is not armed, it should not kill the battery if the battery is in good shape. I suggest you take it and have the battery load tested.

I think it may be fuse #22 ON THE FUSE BLOCK UNDER THE HOOD. should be marked c/ltr 2

You can't bypass the entire system. It has to remain operational, however you can bypass the most common failure item.could try bypasssing fuel relay You bridge connections on relay if i remember right.The most common failure in these is the sensor in the ignition lock that reads the key pellet. That would mean replacing the ignition lock with a sensor included.That sensor can be bypassed. You would need a digital ohmeter to measure the resistance of the pellet in the key. Now go to Radio Shack and buy a resister of the exact same value as the key pellet. Go to the base of the steering column and locate the two thin white wires that go up to the sensor. Cut the two wires and solder the resister between the two ends coming from the harness. This will permanently bypass the sensor but not the rest of the system.

type question in google and click images you should find it then.

Try wires at back off radio may have loose'ish one

Try a diagnostic test it will give you fault code and tell you exactly whats wrong.

Have you done diagnostic test to see what error code it brings up. Also a whirling noise then transmission shifts hard. This happens after the temp. guage is warm. Also look at transmission solenoid. but first I would find fault code it will save you a lot of time.

I had the same problem with my 2001 Cadillac Deville, like you I had replaced literally everything thermostat, water pump, radiator, temperature sensor, reservoir and cap, hoses etc....I didnt have any leakage. I was told I had air in my coolant system. After a lot of research and running across the right mechanic I was able to locate the bleeder and remove the air from my lines. No problem since. The bleeder is located on yhe left side of the radiator on the crossover, mines was sideways..Hope this helps someone before they spend money for new head gasket problems..Try this it helped me....

You have to pull rear wheels , look at frame an lower control arm . http://mastertechmag.com/pdf/2009/June/gmairsuspPDF.pdf

Put rear of car on stands, look at rear axle on both sides near shock lower mount. You should see a small metal link and rod which goes up to the switch.

The speakers should be able to be accessed through the trunk without having to remove the rear deck

Fuse probably blown or a few sounds like

There are engine valve it might be stuck..

http://www.badasscars.com/index.cfm/page/ptype=product/product_id=95/prd95.htm

Ignition Coils/Modules The electronic ignition system uses an individual ignition coil for each cylinder. There are two separate ignition module assemblies located in the camshaft cover of each cylinder bank. Each ignition module assembly contains an ignition control module and four ignition coils. Each ignition coil connects directly to a spark plug using a boot. This arrangement eliminates the need for secondary ignition wires. The ignition module assemblies receive power from a fused ignition feed. Both ignition module assemblies connect to chassis ground. A Reference Low and four ignition control (IC) circuits connect each ignition module assembly to the PCM. The PCM uses the individual IC circuits to control coil sequencing and spark timing for each ignition coil. The IC circuits transmit timing pulses from the PCM to the ignition control module to trigger the ignition coil and fire the spark plug. The PCM controls ignition system sequencing and timing events

it appears that the brake is faulty and when in forward direction is putting itself on. It is free in reverse. check the brakes are in good condition and properly retained

P0410 Secondary Air injection System Troubleshooting ...

? 4:23 www.youtube.com/watch?v=dIrmkxj6wJE Oct 3, 2008 - Uploaded by richpin06a P0410 Secondary Air injection System. ... I have a 2001 Saturn S-series showing this code. The air pump was not running. ... The fix for me was to replace the hose/wire that runs from the diverter valve, over a crevice on the ...

The Rear Integration Body Control Module is located in the trunk and is on a panel against the rear seat back.

It takes a special socket that you have to turn the pump 1/4 turn counter clockwise.