Reduced Engine power.
Thread Starter
Intermediate
Joined: Nov 2024
Posts: 32
Likes: 1
Reduced Engine power.
Hey, I was wondering if someone knows what can cause a "no comm." message for the BCM?? I had corrosion on it but I cleaned it off. But still shows. Do I need to replace the BCM? 1998 C5 corvette
Thanks.
Thanks.
Melting Slicks
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
The message means no communication. Could be anything from signal interference to broken wire to dead BCM. Troubleshoot the issue, find someone else who can troubleshoot, or fire the parts cannon are three options for further investigation.
Tech Contributor
Joined: Jan 2007
Posts: 19,470
Likes: 1,171
From: Dyer, IN
Understood. and how do you check the EBCM codes ? Doesn’t show up on the DIC. I also connected the ESCM and It’s definitely cooked. Messages are still there.Though I have the other codes that show up:
10-PCM: No Codes
28-TCS: U1301 H, C1255 H, C1295 H C, U1016
38-RTD: No Comm.
40 BCM: U1255 H, U1016 H, U1096 H
60 IPC: No codes
Forgot to add this but all the fuses you asked me to check are all good.
10-PCM: No Codes
28-TCS: U1301 H, C1255 H, C1295 H C, U1016
38-RTD: No Comm.
40 BCM: U1255 H, U1016 H, U1096 H
60 IPC: No codes
Forgot to add this but all the fuses you asked me to check are all good.
Tech Contributor
Joined: Jan 2007
Posts: 19,470
Likes: 1,171
From: Dyer, IN
https://www.corvetteforum.com/forums...9-dic-bug.html
Thread Starter
Intermediate
Joined: Nov 2024
Posts: 32
Likes: 1
There is a history here. Other threads cover the multiple water leaks, and a fully submerged ESCM.
https://www.corvetteforum.com/forums...9-dic-bug.html
https://www.corvetteforum.com/forums...9-dic-bug.html
As for the ESCM (Electronic suspension control system) Im just gonna use simulators for that (10W10Ohm resistors) and upgrade into C6 ZO6 shocks. Do you think that will work since the board was in water or should I just get someone with techII to remove the F45 option. Some guy was charging me around 60-80 Bucks for that (not bad because dealer wanted 236).
Tech Contributor
Joined: Jan 2007
Posts: 19,470
Likes: 1,171
From: Dyer, IN
It's really strange because every time I turn on the car I seem to get different codes.. Checked all Grounds, Cleaned. Checked Fuses, All good. I got a fully charged battery, Checked wires and they all seem to be good (I will triple check later), and Cleaned Throttle body. Im pretty certain that the BCM is actually cooked though I find it strange that "reduced engine power" only comes up when i'm 5 min in into driving the car and not as soon as I turn it on.
As for the ESCM (Electronic suspension control system) Im just gonna use simulators for that (10W10Ohm resistors) and upgrade into C6 ZO6 shocks. Do you think that will work since the board was in water or should I just get someone with techII to remove the F45 option. Some guy was charging me around 60-80 Bucks for that (not bad because dealer wanted 236).
As for the ESCM (Electronic suspension control system) Im just gonna use simulators for that (10W10Ohm resistors) and upgrade into C6 ZO6 shocks. Do you think that will work since the board was in water or should I just get someone with techII to remove the F45 option. Some guy was charging me around 60-80 Bucks for that (not bad because dealer wanted 236).
So again, you are absolutely certain that you have a U1064C code ?
Thread Starter
Intermediate
Joined: Nov 2024
Posts: 32
Likes: 1
40-BCM: 3 Codes
U1255H, U1096, U1016H. Was the last codes I had.
Though I remember having a "No comm." when all of this was first happening.
Tech Contributor
Joined: Jan 2007
Posts: 19,470
Likes: 1,171
From: Dyer, IN
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Tech Contributor
Joined: Jan 2007
Posts: 19,470
Likes: 1,171
From: Dyer, IN
Thread Starter
Intermediate
Joined: Nov 2024
Posts: 32
Likes: 1
Sorry lucky, I’m having a hard time trying to figure out what info I have and have not given you since the last thread. I posted the codes on the last thread. Thanks for your help. I’m not trying to intentionally cherry pick. Id be more than happy to provide The required information but I feel I have told the whole story…
Melting Slicks
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
Sorry lucky, I’m having a hard time trying to figure out what info I have and have not given you since the last thread. I posted the codes on the last thread. Thanks for your help. I’m not trying to intentionally cherry pick. Id be more than happy to provide The required information but I feel I have told the whole story…
Something like:
Date: Issue
Stuff I've tried- results of that stuff
If you've got a bunch of seemingly unrelated codes maybe try coloring the text for each code?
Or giving up on the forum for solving a complex issue? Well meaning posters (and let's face it a troll or two) may have you chasing ghosts anyway.
Thread Starter
Intermediate
Joined: Nov 2024
Posts: 32
Likes: 1
Lerpy it's a lot easier to stay organized if you confine your issues to a single thread and present stuff in an organized manner.
Something like:
Date: Issue
Stuff I've tried- results of that stuff
If you've got a bunch of seemingly unrelated codes maybe try coloring the text for each code?
Or giving up on the forum for solving a complex issue? Well meaning posters (and let's face it a troll or two) may have you chasing ghosts anyway.
Something like:
Date: Issue
Stuff I've tried- results of that stuff
If you've got a bunch of seemingly unrelated codes maybe try coloring the text for each code?
Or giving up on the forum for solving a complex issue? Well meaning posters (and let's face it a troll or two) may have you chasing ghosts anyway.
Sorry about that friends this was my first time posting a major complex issue like this but I understand now. If anyone is still interested in helping then I can write a detailed Story with timelines and details…
