LT1-LT4 Modifications 1993-97 Gen II Small Block V8

BCM issues

Thread Tools
 
Search this Thread
 
Old Sep 8, 2011 | 01:14 PM
  #1  
69gto96z's Avatar
Thread Starter
TECH Fanatic
iTrader: (13)
 
Joined: May 2006
Posts: 1,245
Likes: 15
From: Rockwall, TX
Default BCM issues

So my radio started randomly turning off, and coming back on. After doing some research I decided to check the BCM, pulled it out, and all of the connections inside look fine. I re-installed the BCM, and now the radio, whether playing the radio, cd, or ipod, sounds like it is cutting in and out very fast. It does not lose power, but the sound quality is pure ****. Also, the horn and running lights quit honking/flashing when I use my keyless remote. The windows have been acting up too. My first thought was that I didn't get the BCM plugged back in all the way. So I pulled it back out, and checked, all of the pin connectors are still in good shape, not bent at all. I plugged it all back in, and still nothing. Has anybody ever experienced this before? Thanks
Reply
Old Sep 8, 2011 | 05:13 PM
  #2  
jaycenk's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jun 2009
Posts: 2,210
Likes: 1
From: Holiday, FL
Default

I have taken mine out and re soldered the connections many times trying to fix this issue and I am at the point now that I am ready to either do the radio power by pass mod or just pony up and buy a new one.
Reply
Old Sep 8, 2011 | 05:35 PM
  #3  
LT1FirebirdSLP's Avatar
TECH Regular
iTrader: (2)
 
Joined: Nov 2004
Posts: 417
Likes: 1
Default

Mine did the same thing before I took it off the road, although I began looking into the issue and I got as far as figuring out that the "cutting in and out" seems to originate with power fluctuation in the amplifier. Do you have a Monsoon system? I forget where the amplifier is but if I had to take a wild guess, it should be somewhere in the vicinity of the passenger rear C-Pillar. I would check power to the unit, and if possible, swap it out with a known good unit to see if the issue goes away.
Reply
Old Sep 8, 2011 | 05:49 PM
  #4  
jaycenk's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jun 2009
Posts: 2,210
Likes: 1
From: Holiday, FL
Default

Amp is located In the rear passenger wheel well. Doubt that the case but worth a shot. Best bet is to look up the BCM repair write up on one of the F-body forums. There are several but one tells you what color wire brings power in to the BCM and Back out to windows and Radio ect. wire a temp test wire to the out going power wire and wire up a small light bulb and you will see if it is a power issue from the BCM or not. Light bulb will react faster then a Volt meter. Only reason I know for a fact mine is the BCM is I have a back lit aftermarket radio bezzel that flickers when I have the problem.
Reply
Old Sep 8, 2011 | 07:44 PM
  #5  
IronOutlaw's Avatar
TECH Fanatic
iTrader: (4)
 
Joined: Feb 2008
Posts: 1,443
Likes: 1
From: Athens, GA
Default

I have the same problem but my windows and radio quit working. Ive been too busy to pull the BCM and check it out.
Reply




All times are GMT -5. The time now is 02:08 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE