Speedometer not working after LMC5 install
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5th Gear
Joined: Sep 2022
Posts: 5
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Speedometer not working after LMC5 install
I recently got the dreaded column lock message (2000 C5 six speed), and remedied it with the LMC5 kit. This solved that problem, but my speedometer quit working immediately after. Richard from Compliance Parts has been open to helping, but no solution yet. From what I understand the modifications to install the LMC5 would have absolutely nothing to do with the speedo. I did have the plastic knee bolster off along with the plastic cover over the steering column because I had to give the column lock motor a couple of whacks to get it to release. But I don't believe anything speedo related goes through there. I have no codes relating to the vehicle speed system, and all the other gauges work. I've also checked every fuse in the footwell and the engine compartment. I've triple checked the LMC5 install, and all the other wiring in the area of the BCM. I'm really at a loss here, any insight would be MUCH appreciated.
Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
I recently got the dreaded column lock message (2000 C5 six speed), and remedied it with the LMC5 kit. This solved that problem, but my speedometer quit working immediately after. Richard from Compliance Parts has been open to helping, but no solution yet. From what I understand the modifications to install the LMC5 would have absolutely nothing to do with the speedo. I did have the plastic knee bolster off along with the plastic cover over the steering column because I had to give the column lock motor a couple of whacks to get it to release. But I don't believe anything speedo related goes through there. I have no codes relating to the vehicle speed system, and all the other gauges work. I've also checked every fuse in the footwell and the engine compartment. I've triple checked the LMC5 install, and all the other wiring in the area of the BCM. I'm really at a loss here, any insight would be MUCH appreciated.
Thread Starter
5th Gear
Joined: Sep 2022
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Try to keep the laughter to a minimum, here are my codes:
TCS - C1276 H, U1016 H
BCM - B0502 H C, B0507 H C, B2482 H C, B2587 H, B2592 H, U1016 H
SDM - U1016 H
LDCM - U1016 H
SCM - U1016 H
RFA - U1096 H, U1064 H, U1016 H
RDCM - U1016 H
TCS - C1276 H, U1016 H
BCM - B0502 H C, B0507 H C, B2482 H C, B2587 H, B2592 H, U1016 H
SDM - U1016 H
LDCM - U1016 H
SCM - U1016 H
RFA - U1096 H, U1064 H, U1016 H
RDCM - U1016 H
Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
Ok. So I take it you disconnected the battery when you installed the CLB? If so, clear the history codes and see what you are left with.
Melting Slicks
Joined: Sep 2008
Posts: 3,138
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From: Espanola New Mexico
It could be completely coincidental that your speedometer quit working. The PCM receives the signal from the VSS " vehicle speed sensor " on the differential and is sent to the speedometer and is also used for the cruise control.
Thread Starter
5th Gear
Joined: Sep 2022
Posts: 5
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Yeah I unhooked the negative terminal every time I was doing something. Cleared all the codes and drove a dozen miles or so and the only codes that came back are these under BCM - B0502, B0507, and B2482. The first two are no surprise because I pulled the fuse for the DRL's a long time ago. I read something that the B2482 code isn't a big deal either. So still no clues. Cruise control works fine and displays the speed when you set it, and every other single thing on the instrument cluster works fine as well.
