The manufacturer doesn't "necessarily" recommend flushing this system. They go on to state that since it is very unlikely to that a flush would completely clean the condenser, it should be changed along with the compressor, accumulator and orifice tube; in the event of a compressor failure. (When compressors fail they tend to send debris throughout the AC system, it can and will get caught in the small orifices of the condenser evaporator, accumulator and orifice tube) However, while you have the AC lines, orifice tube (removed), accumulator and evaporator disconnected; use compressed air (from a shop compressor) to blow out each line as well as the evaporator and condenser.
under the truck near the passenger side wheel
The 2003 Cadillac Deville oil pressure sending unit is located on the left-hand side of the engine. The oil pressure sending unit will be three inches above the oil pan.
on the side where the oil filter is located
The starter on a 1995 Cadillac DeVille is removed by disconnecting the battery, unbolting the starter, and lowering it slightly. The wiring harness can then be disconnected, the starter removed, and a new unit put in place.
On top of the steering column, below the steering wheel.
The cable is part of the shift indicator assy . Must be replaced as a unit
Oil pressure sending unit is located by oil pan in front. Unplug unscrew and install new one
Yes, oil pressure switches are located on the side of the oil filter adapter housing.
I've repalced a fuel pump in a 94 Cadillac STS and it required removal of the gas tank. The sending unit is on top of the tank.
Drop the fuel tank. Remove the fuel pump and sending unit assy. This is incorrect, the 2000 up deville has an access plate in the trunk, pull out the mat and it will be obvious you can change full sending unit and pump through it.
The climate control module is part of the control assembly. The entire assembly has to be replaced as one unit for the 1990 models.
It can mean you have low oil pressure and it can mean that the oil sending unit is bad. Do not ignore this and have this checked out by a trusted mechanic.