DTC B2507
Seat Temperature and Mode Signal
DTC B1860
Driver Lumbar Vert Sensor CKT Malf
DTC C1295
Brake Lamp Switch Circuit Open
DTC C0665
Chassis Pitch Signal Circuit
DTC U1000 and U1255
Class 2 Communication Malfunction
DTC U1001-U1254
Lost Communications With ***
Circuit Description
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message. These node alive messages are used for State of Health monitoring. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. When a module does not associate an identification number with at least one critical parameter within 5 seconds of beginning serial data communication, DTC U1000 or U1255 is set. When more than one critical parameter does not have an identification number associated with it, the DTC will only be reported once. The following modules communicate on the class 2 serial data circuit:
• Audio amplifier
• Cellular telephone module w/UV8
• Dash integration module (DIM)
• Digital radio receiver
• Driver door module (DDM)
• Driver door switch assembly (DDSA)
• Electronic brake control module (EBCM)
• Electronic suspension control module (ESC)
• Front passenger door module (FPDM)
• Inflatable restraint sensing and diagnostic module (SDM)
• Instrument panel cluster (IPC)
• Instrument panel integration module (IPM)
• HVAC control module - auxiliary
• Left middle door module (LMDM) w/V4U
• Left rear door module (LRDM)
• Memory seat module (MSM) w/A45
• Powertrain control module (PCM)
• Radio
• Rear integration module (RIM)
• Remote control door lock receiver (RCDLR)
• Right middle door module (RMDM) w/V4U
• Right rear door module (RRDM)
• Steering column module w/N37
• Theft deterrent control module
• Window switch - passenger front w/armored car
• Vehicle communication interface module (VCIM)
Your best bet ,take your vehicle to a qualified repair shop.
SOURCE: left and right turn signal
Take off the black plastic cover under the dash above the brake pedal, 2 9/32 screws hold the front edge to the bottom of the dash. The flasher is located behind the dash above the parking brake. it has a metal clip holding it to the dash about behind the trunk release button. You have to reach around with your hand to find it as it is hard to see. Once you unclip it you can pull it down to unplug it. I just did this job, once you find it it's easy. Napa carries the replacement flasher $13.19. Good luck!!
SOURCE: left and right turn signal
I have tried to find the signal flasher also, And looked under the dash after removing the cover below the stering wheel, this exposed another panrl, aluminum cover to remove, After removing this 2nd cover I looked up below with bright lights and could not find the signal flasher to replace? I purchased the part from NAPA No 34. Assuming this is the correct replacement, I can not find one under the dash to the left of the stering wheel column as Haynes Repair manual also states that location?
SOURCE: 2001 cavalier codes
P0621 - indicates a failure in the alternator lamp curcuit.
P0304 - indicates a miss fire was detected in the #4 cylinder
U1040 - indicates a loss of communication with the ABS system
U1000 - Indicates a class 2 communication loss
None of those codes are relating to a transmission failure (P0700-P0702)
I would have a visual look at the transmission and verify that all electrical wires are connected and tight. Then I would have the transmission serviced if it hasn't been within the last 35,000 miles.
Have the trouble codes cleared and address the ones that return.
After that you may be looking at an internal transmission adjustment and/or repair.
Good luck.
SOURCE: passenger heated seat doesn't work.
You have two fuse boxes below and in front of the rear seat cushion. You have to pull the seat cushion up and then pull back the carpeting to get to them. Check the appropriate fuse and replace if necessary. If it's not a blown fuse then you have a short somewhere most likely.
SOURCE: 1996 cadillac sedan deville blinker stoped blinking
I assume all lamps are tested to be ok.
1) Check fuse A11 in trunk (10A) is ok,
2) Check turn flash enable relay 'F' in trunk is operated when vehicle Ign on,
3) Check +12V is present on Lt Blu wire on turn flasher module (LHS steering column) when Ign on,
4) if no fault found during above checks, operation of the turn switch should be checked
Find more information about Cadillac Deville Concours Wiring Diagram and Electrical System Schematics here. (v8mr2.com)
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