ss52 Posted July 27, 2014 Report Share Posted July 27, 2014 O3 SLS. My blower motor was really loud when I bought the car back in March. Since the motor has quit working. For a while it would come on when I turned the car on. Either first thing in the day or after I stopped while running around. Now it won't run @ all. I bought a cheap new motor and replaced the old one. The motor started right up as soon as I started the car. Then on the test drive it also quit. I just tested the old motor by hooking it up to a battery. It works fine. Any ideas? Climate control module? wiring? I'm open to suggestions Link to comment Share on other sites More sharing options...
Göran W Posted July 28, 2014 Report Share Posted July 28, 2014 Any codes? Link to comment Share on other sites More sharing options...
ss52 Posted July 31, 2014 Author Report Share Posted July 31, 2014 I'm not sure what you mean. I have not put it on a reader. I am not seeing anything to do with the blower motor or AC on the monitoring system Link to comment Share on other sites More sharing options...
Cadillac Jim Posted July 31, 2014 Report Share Posted July 31, 2014 You can read the OBD I codes yourself. With the key on, using the A/C buttons, press <Off> and <Pass Warmer> together for a few seconds until all the dash lights come on like you just turned on the key, then release both. The DIC will then display the codes, one at a time. Write them down and post them here. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
ss52 Posted August 7, 2014 Author Report Share Posted August 7, 2014 I got a lot of history codes. DIM U1255 IPC U1016, IRC U1016, MSM U1000, PCM P0128, P0463 ,P0621, P1115 and TTM U1016. These are all history codes. As soon as I cleared all the codes I got the coolant level warning again(since I have owned the car). Any ideas? Link to comment Share on other sites More sharing options...
Cadillac Jim Posted August 7, 2014 Report Share Posted August 7, 2014 DIM (Dash Integration)U1255 Class 2 Communication Malfunction (Serial Data Line Malfunction)IPC (Instrument Panel)U1016 Loss of Class 2 Communication with PCMIRC (Radio)U1016 Loss of Class 2 Communication with PCMMSM (Memory Seats)U1000 Class 2 Communication MalfunctionPCMP0128 Coolant Thermostat Below Thermostat Regulating TemperatureP0463 Fuel Level Sensor Circuit High VoltageP0621 Generator L-Terminal CircuitP1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High VoltageTTM (Tilt & Telescoping Wheel Module)U1016 Loss of Class 2 Communication with PCM Someone put in the wrong thermostat or took the thermostat out. There is a problem with the wiring to the fuel level sensor. Either there is a problem with the alternator wiring, the alternator is slipping in the serpentine belt, or the alternator may need service. The ECT sensor is probably not plugged firmly into the wiring harness. And, there is a serious problem with the car's network (the PPL wire in much of the wiring), apparently under the dash. No codes for the heater or A/C, though, so, unless there is a problem with the wiring (which can't be ruled out, looking at the melange of HISTORY codes), the blower or its internal module are likely bad. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
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