Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

another no start issue...

Thread Tools
 
Search this Thread
 
Old Apr 12, 2009 | 11:14 AM
  #1  
Tricked-Out-Toy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 612
Likes: 0
From: Nashville, TN
Default another no start issue...

Its a 99 camaro, cam only with a TH350. basicly we stripped everything behind the dash out no HVAC or radio. Now right now I can stick the key in all the lights light up go to turn it over and nothing, The fuel pump turns on but the starter doesnt even click. I pulled the starter relay and jump the red to the purple and it turned over so I know the starter is fine.... Im just not getting power to the relay from the ignition switch.. could this be a BCM problem?

I can see/feel a small black box (not the BCM) with two connectors in it "click" when I turn the key but thats it nothing else. Im not getting any power to the starter relay.... Ive got the dash pulled back out and have double checked all connection and they are all tight. Is there a ground that you can think of that is easily missed? what are the symptoms of a blow BCM? the car has been down for over 2 years and its so close to being running again!

Last edited by Tricked-Out-Toy; Apr 12, 2009 at 04:57 PM.
Reply
Old Apr 13, 2009 | 08:02 AM
  #2  
Tricked-Out-Toy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 612
Likes: 0
From: Nashville, TN
Default

Anyone have scans of the grounding locations from the GM shop manual and the BCM and theft det system? my haynes manual sucks for diagrams..
Reply
Old Apr 13, 2009 | 08:15 AM
  #3  
sroach20's Avatar
TECH Addict
iTrader: (31)
 
Joined: Dec 2002
Posts: 2,318
Likes: 1
From: houston, Texas
Default

yellow/black wire from the bcm to the starter relay tells the starter to kick.
Reply
Old Apr 13, 2009 | 08:28 AM
  #4  
Tricked-Out-Toy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 612
Likes: 0
From: Nashville, TN
Default

Thanks for the info! Ill check to see if im getting signal but im assuming not since I swapped relays out and still nothing.. If the ground for the signal side of the relay was out it wouldnt trip the relay.

so lets say I am getting signal from the BCM on the yel/blk wire where does the "ground" wire go? is it just a group body/engine ground? if the ground was out would the rest of the curcuits on the fuse/relay plannel be dead as well?
Reply
Old Apr 13, 2009 | 09:04 AM
  #5  
bjamick's Avatar
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

If you just did a TH350 swap, if your car was an A4 before then you need to get your neutral safety switch and plug it back in. I had the same problem when I did my th350 swap.
Reply
Old Apr 13, 2009 | 09:18 AM
  #6  
Tricked-Out-Toy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 612
Likes: 0
From: Nashville, TN
Default

the car was actually a 6 speed car to the clutch engaged switch is what acts as the neutral safety switch. that is plugged in and was working fine. Ill have to check the contract to make sure its still working properly... right now Im not rulling anything out. Its acting like a neutral safety issue, when you turn the key to crank it over the gauges/lights all go out like it wants to and is expecting to turn over just nothing is getting to the starter....
Reply
Old Apr 13, 2009 | 10:11 AM
  #7  
red1999z28's Avatar
11 Second Club
iTrader: (1)
 
Joined: Jun 2004
Posts: 267
Likes: 0
From: Nashville, TN
Default

Originally Posted by Tricked-Out-Toy
the car was actually a 6 speed car to the clutch engaged switch is what acts as the neutral safety switch. that is plugged in and was working fine. Ill have to check the contract to make sure its still working properly... right now Im not rulling anything out. Its acting like a neutral safety issue, when you turn the key to crank it over the gauges/lights all go out like it wants to and is expecting to turn over just nothing is getting to the starter....
Like Josh said the car ran with the TH350 for about 8 months but has been sitting for 2 years now...Could this be VATS related? I'm going to attempt to disable that tonight and check. Also, Josh maybe we should just go ahead and bypass the clutch safety switch...I should have done that a long time ago anyways.
Reply
Old Apr 13, 2009 | 10:21 AM
  #8  
Tricked-Out-Toy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 612
Likes: 0
From: Nashville, TN
Default

Ya we can jump that wire easily enough I want to double check that Vats is disabled to.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Apr 13, 2009 | 10:25 AM
  #9  
red1999z28's Avatar
11 Second Club
iTrader: (1)
 
Joined: Jun 2004
Posts: 267
Likes: 0
From: Nashville, TN
Default

I have never disabled it in HPtuners...so we can try that tonight as well...I sure hope it's something crazy like that...
Reply
Old Apr 13, 2009 | 10:27 AM
  #10  
Tricked-Out-Toy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 612
Likes: 0
From: Nashville, TN
Default

That would be SWEET! But I dont remmber the "security" light flashing when I turned the key to cranking position... I may have missed that..
Reply
Old Apr 13, 2009 | 11:44 AM
  #11  
spike1n1's Avatar
Teching In
 
Joined: Mar 2004
Posts: 48
Likes: 0
From: East Memphis BOOYA!
Default

Wow i didnt even think about the clutch switch. I'd definately check that too.
Reply
Old Apr 14, 2009 | 12:36 AM
  #12  
red1999z28's Avatar
11 Second Club
iTrader: (1)
 
Joined: Jun 2004
Posts: 267
Likes: 0
From: Nashville, TN
Default

turns out it appears to be a faulty BCM, we bypassed the BCM's starter relay (tater can you post the wire colors?) and it started right up. I disabled VATS and it runs with no problems now! I'm so excited to have my car back running!
Reply
Old Apr 14, 2009 | 07:53 AM
  #13  
Tricked-Out-Toy's Avatar
Thread Starter
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 612
Likes: 0
From: Nashville, TN
Default

Ya just grounded out the yellow and black wire. runs like a champ!
Reply
Old Apr 14, 2009 | 09:01 AM
  #14  
bjamick's Avatar
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

Glad to hear the car is running again.
Reply
Old Apr 14, 2009 | 09:17 AM
  #15  
Nightrydass's Avatar
TECH Enthusiast
 
Joined: Aug 2006
Posts: 623
Likes: 0
From: In your sisters panties
Default

so...umm...what is the "secuity light" does flash when you try to start it???

I have the same issue; the car is getting dropped of at the shop today, i hope i dont have to pay out the ***....
Reply




All times are GMT -5. The time now is 01:39 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