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C5 2002 door lock issue . So, recently purchased this C5 Vert and all was fine. The 2 headlight actuators have gone 1 day apart. Now I need some help with this new drivers side door lock issue. All was fine as I went out today I noticed the auto lock feature didn't work. Once I arrived t my destination I tried locking the car and it sounds the horn and locks the passenger Side only. When hen I manually lock the driver side all unlocks as designed so....... I suspect just a driver side door lock issue. Can someone here please point me in the right direction if you have experienced this issue and a applicable remedy. TYIA ( not sure if it's an actuator or the control module or possibly something else...... HELP !!
The IPC display, the 20-character, vacuum florescent screen above the steering column that says "Corvette by Chevrolet" every time you turn on the key is a powerful device.
DIY Service Techs are going to be most interested in the LPG’s ability to show diagnostic trouble codes (DTC) for all the modules that transmit them.
The "diagnostic display" mode is entered with the following Procedure: Page 8-500
1) Turn on the ignition but don't start the engine. 2) Press the "reset" button to turn off any warning messages 3) Press and hold "options" and 4) While holding "options", press "fuel" four times within a 10-Second period.
Initially, the on-board diagnostics go into the "automatic" mode, which shows each module's DTCs in a pre-set sequence: (Page No. are for the GM Service Manual) 10 PCNI Powertrain Control Module page 6-357 - 6-361 28 TCS Traction Control system ABS on page 5-86 ?? RTD Real Time damping page 3-136 40 BCM Body Control Module page 8-405 LTD Page 8-727 60 [PC instrument Pane! Cluster page 8-508 80 radio page 8-213 99 FIVAC Heater Vent-Air Conditioning page 1-118 A0 LDCM Left Door Control module page 8-904 to 8-951 Al RDCM Right Door Control Module page 8-904 to 8-951 AC SCM Seat Control module page 8-1064-8-1082 B0 RFA Remote Function Actuation page 8-676
For each module, all DTCs will be displayed. If none are present in a module, you will see "no more codes" on the ICP display. There are two kinds of DTCs, "Current" and "History," designated with a letter suffix, "C" or "H". A current code indicates that the malfunction is present in the system whose module is displaying data. A history code indicates a problem existed in that module sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it is possible it's evidence of a previous problem. Now solved, that was not removed by clearing codes. More likely is that a history code indicates an intermittent malfunction.
"Intermittent" are the most challenging DTCs. An intermittent may have happened only once, may have happened more than once but is inconsistent in its appearance or may be happening on a regular basis but not at the time the IPC is displaying codes. History codes can also be caused by a current malfunction in a system that is not Operating at the time DTCs are displayed. An example is the rear window defogger, which doesn't operate until the BCM detects engine rpm. For history codes set by a system that does not operate with the key on and engine off, a special diagnostic tool called a "scan tester is necessary to properly diagnose the malfunction.
Once the IPC has displayed all 11 modules, the system goes into the manual mode, which allows selection of each module, using combinations of DIC buttons. The manual mode can also be entered at any time during the automatic sequence by pressing any button except "E/M". Once the IPC displays "manual diagnostics", you may select a particular module by pressing the options button to go forward or the "trip" button to go back. Once a system is selected and a DTC is displayed, if more than one are present; press "gages" To move forward or "fuel" to go back. To exit the diagnostic mode at any time, press E/M". If you want to erase or "clear" codes, press "reset". Clearing a code does not repair a problem. You are simply erasing the evidence of it in the module's memory.
After writing down all the codes you find, clear the codes and take the car for a drive. Then when you get back, rescan the codes and report them back here.
10PCM 0442H,
AO LDCM B2282H,B2284H,B2262H,U1064H.
RDCM B2283H,B2285H,B4064H
A6 B0851H,B2607H,B2606H,B2860
Any help will be greatly appreciated. thanks!
B2282 12V POWER FEED #1 FAULT LEFT DOOR CONTROL MODULE (LDCM) DOORS 1997, 1998, 1999, 200, 2001, 2002, Early 2003
B2284 12V POWER FEED #2 FAULT LEFT DOOR CONTROL MODULE (LDCM) DOORS 1997, 1998, 1999, 200, 2001, 2002, Early 2003
B2262 MIRROR HORIZONTAL POSITION SENSOR FAULT LEFT DOOR CONTROL MODULE (LDCM) DOORS 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
U1064 NORMAL SOFTWARE FUNCTION, HISTORY STATUS UPON IGNITION CYCLING ALL MODULES DATALINK COMMUNICATIONS 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
B2283 12V POWER FEED #1 FAULTRIGHT DOOR CONTROL MODULE (RDCM)DOORS1997, 1998, 1999, 200, 2001, 2002, Early 2003
B2285 12V POWER FEED #2 FAULT RIGHT DOOR CONTROL MODULE (RDCM) DOORS 1997, 1998, 1999, 200, 2001, 2002, Early 2003
B4064 ?????
B0851 BATTERY 1 OUT OF RANGE SEAT CONTROL MODULE (SCM) SEATS 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
B2607 SEAT HORIZONTAL POSITION SENSOR FAILURE SEAT CONTROL MODULE (SCM) SEATS 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
B2606 SEAT REAR VERTICAL POSITION SENSOR FAILURE SEAT CONTROL MODULE (SCM) SEATS 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
B2860 TELESCOPING COLUMN POSITION SENSOR FAILURE SEAT CONTROL MODULE (SCM) STEERING WHEEL AND COLUMN 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Read this thread!!! I would start by taking the accordion shaped seal from between the body and door (on each side). Fish the plugs out of the body side and disconnect each plug. Clean and make sure all pins are connecting. Do a search on this site and you will find how-to including pictures. Also, clean all the grounds on the car (I seem to remember 6, but I see there are 13 of them). The link to the trouble codes is at Dino's Corvette Salvage. Good Luck!
Last edited by NealinAZ; Apr 28, 2022 at 04:59 PM.
My guess is that you need to replace the locking & unlocking relay in your driver side door modul.
The relay contact sets got worn due to current over many years and do not give proper voltage to the locking/unlocking motor due to this.
This is how my unlocking(green trace) voltage looks like when I tried to unlock my drivers door last year before replacing relays
This is how it looked like after new relays where installed
This photo shows positions of the relays
.
I bought a three pack of these relays and replaced both lock and unlock relay because they are exposed to the same ware and age
C5 Driver side door lock issue Please HELP!!
