Cadillac Owners Forum banner

1 - 8 of 8 Posts

·
Registered
Cadillac
Joined
·
34 Posts
Discussion Starter #1
I installed a new window regulator and motor from a dhs into my base deville. I was driving down the road two days later and my radio turned off when I tried to turn it back on the time kept flashing and it was making a squealing noise when it flashed. I checked the codes and got AMP U1000, PDM U1714, PDM B3832, and IPM B0429. Tried resetting by undoing the battery. Nothing happened. Have the fuses for the radio and the amp pulled because the noise was driving me crazy. Any ideas what is wrong and how I can fix it. Any more info on ipc u1000 and amp u 1000 and what causes them. Thanks
 

·
Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
Joined
·
71,039 Posts
U1000 (Current or History ???) codes refer to loss of circuit data transmission. In this case they have no relation to the window regulator. The B code is the actuator for rear console air diversion.

Have you done anything to the radio head unit, wiring, or an amplifier ?

You may be in for a head unit diagnosis by a professional shop.
 

·
Super Moderator
2010 DTS
Joined
·
87,552 Posts
PDM = Passenger Door Module.
B3832 - Window Position Sensor Circuit
U1714 - Loss of Front Door Module to Window Motor Normal Speed Comm.



DTC U1000 or U1255 may set current or history, with or without other DTCs.

These DTCs set when the control module does not receive a message that it was expecting from another control module, and does not know which control module did not send the message.

1. If the DTC U1000 or U1255 is set in history with other DTCs set current or history, diagnose the other DTCs first.
2. If the DTC U1000 or U1255 is set current, this usually indicates a module that is currently not communicating or a configuration issue. For example, if the control module is configured for an option (i.e., OnStar, keyless entry, memory mirrors, etc.) that the vehicle does not have, it may expect to receive a message regarding this missing feature. This would usually occur due to the control module being recently replaced and incorrectly set up.
3. When the DTC U1000 or U1255 is current, the module that is not communicating may not even be listed on the Tech 2 on the Diagnostic Circuit Check /Class 2 Message Monitor list.
4. If the DTC U1000 or U1255 has set in history without other DTCs, replacing the control module that set the DTC is most likely NOT the solution. The module that has set the code is looking for an input from another module that is not communicating. Because the module did not receive an input that it is expecting to see, it sets a U1000 or U1255 which indicates there was a loss of communications. Look at the customer's concern (i.e., intermittent, erratic tachometer operation). This will probably be a better indication of the control module that is the source of the concern.
 

·
Registered
Cadillac
Joined
·
34 Posts
Discussion Starter #4
Sub- I have done nothing to the radio head unit only thing done to the car was a new regulator and motor. The ipc u1000 code is current.
Ranger- thanks for all the info. Is the control module you are talking about the Body control module.
Does this mean that my amp or radio may be bad or can this be fixed by a tech II. Or is it a bad BCM.
Also a new thing it just started doing today is when I put it in reverse it feels like the driverside rear tire is hoping or jumping. Thanks guys
 

·
Super Moderator
2010 DTS
Joined
·
87,552 Posts
I am just guessing here, but based on #2 above, I suspect the problem may be that you used a DHS regulator and motor in a base Deville. Don't ask why, I don't know.
 

·
Registered
Cadillac
Joined
·
34 Posts
Discussion Starter #6
Had a feeling it may have been that. I will plug in the old motor and see if that fixes it. I'll let you know the outcome Thanks again.
 

·
Registered
Cadillac
Joined
·
34 Posts
Discussion Starter #7
Not the motor hooked up the old one and put the amp and radio fuses back in and still have the time flashing on the radio with it making a squealing noise. Current codes witht the old motor hooked up are AMP U1000 and PDM B3832. Any other ideas?
 
1 - 8 of 8 Posts
Top