Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

Reverse locked out-Searched

Thread Tools
 
Search this Thread
 
Old Aug 17, 2006 | 01:45 PM
  #21  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

^^^^^^
Reply
Old Aug 18, 2006 | 11:03 PM
  #22  
wrencher's Avatar
wrencher
20 Year Member
iTrader: (2)
 
Joined: Aug 2002
Posts: 4,762
Likes: 2
From: Chicagoland
Default

Well then your problem likely is either the PCM wont ground the solenoid or cannot ground it.
Need to figure out which.
Anything out of the car , modded, cluster BCM A/C stripped for racing etc?
Has a working speedo & cluster? Was there ever wiring problems on the car?
Have access to the data steam from the PCM?
Reply
Old Aug 19, 2006 | 12:21 AM
  #23  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

None of the wiring in the car has ever been messed with besides the stereo. AC, speedo and cluster have never been messed with. There has never been any wiring problems. I don't have access to the data stream from the PCM.

This started after a cam install. It was working the day I started. Took me 2 days to swap the cam and it wouldn't work after. The only thing unplugged that I know of is the driver side o2 sensor. I need an extension for it.
Reply
Old Aug 19, 2006 | 12:38 AM
  #24  
qwikz28's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2004
Posts: 2,491
Likes: 2
From: Franklin Lakes, NJ
Default

Originally Posted by Black01M6SS
None of the wiring in the car has ever been messed with besides the stereo. AC, speedo and cluster have never been messed with. There has never been any wiring problems. I don't have access to the data stream from the PCM.

This started after a cam install. It was working the day I started. Took me 2 days to swap the cam and it wouldn't work after. The only thing unplugged that I know of is the driver side o2 sensor. I need an extension for it.
mine happened after a clutch install.
Reply
Old Aug 20, 2006 | 02:37 AM
  #25  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

Back to the top for the Sunday group :-(
Reply
Old Aug 20, 2006 | 07:54 AM
  #26  
Farmer2's Avatar
TECH Apprentice
iTrader: (168)
 
Joined: Jul 2002
Posts: 359
Likes: 0
From: Chicago Far Far South Subs
Default

Did you do any tuning for the cam after the install? If you know someone with HpTuners they can trigger the reverse solinoid and check on a true command from the PCM. It does sound like it is originating from the PCM now. Is it possable you disconnected or broke the ground going to the pcm? Maybe check that too.

Try pin 40 and 1 on connector C2 red, and see if they are a direct short to ground when ohming them out at the connector. Maybe the pcm is working properly but the grounding is bad. And again make sure the connection at the pcm to connector C2 is solid and all pins are making good. I would say if the grounding of these 2 pins are ok then it has to be the pcm. Do you know someone that has a pcm from a M6 and you guys could swap and try, if the above test proves direct short to ground?

Dave

Last edited by Farmer2; Aug 20, 2006 at 08:02 AM.
Reply
Old Aug 20, 2006 | 03:31 PM
  #27  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

Originally Posted by Farmer2
Did you do any tuning for the cam after the install? If you know someone with HpTuners they can trigger the reverse solinoid and check on a true command from the PCM. It does sound like it is originating from the PCM now. Is it possable you disconnected or broke the ground going to the pcm? Maybe check that too.

Try pin 40 and 1 on connector C2 red, and see if they are a direct short to ground when ohming them out at the connector. Maybe the pcm is working properly but the grounding is bad. And again make sure the connection at the pcm to connector C2 is solid and all pins are making good. I would say if the grounding of these 2 pins are ok then it has to be the pcm. Do you know someone that has a pcm from a M6 and you guys could swap and try, if the above test proves direct short to ground?

Dave
I didn't do any tuning but the car runs great. Idle is so smooth its disapointing. I don't know of anyone with HpTuners. As far as me breaking a ground to the PCM. I highly doubt it but that was the next thing I was thinking I should check too. Everything except the reverse lock out works just fine. I don't know of anyone around with another m6 that I could swap PCM's with.

Thanks for the reply. I'll check and make sure the PCM has ground later and post up.
Reply
Old Aug 20, 2006 | 04:48 PM
  #28  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

Pin 1 and 40 were both good grounds, 0.1 ohm on both.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Aug 20, 2006 | 05:52 PM
  #29  
Farmer2's Avatar
TECH Apprentice
iTrader: (168)
 
Joined: Jul 2002
Posts: 359
Likes: 0
From: Chicago Far Far South Subs
Default

Originally Posted by Black01M6SS
Pin 1 and 40 were both good grounds, 0.1 ohm on both.
I would say the pcm is acting up then. Try maybe a junk yard one, if you can find one.
What year car is it again?
Reply
Old Aug 20, 2006 | 06:18 PM
  #30  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

2001... That sucks.
Reply
Old Aug 20, 2006 | 06:23 PM
  #31  
qwikz28's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2004
Posts: 2,491
Likes: 2
From: Franklin Lakes, NJ
Default

Originally Posted by Black01M6SS
2001... That sucks.
interesting twist to my car story, my first gear lock out is now going as well. it takes a couple tries just to get it in first at times. do you have that problem at all?
Reply
Old Aug 20, 2006 | 07:13 PM
  #32  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

I only drove the car once since the reverse lock out messed up but I didn't notice anything wrong with getting into any gears. Just really hard to push it over so I could put it in reverse. 64k miles on the car, kinda makes me mad that its having computer problems. I still have a vortech supercharger kit to install. It would really be bad if the PCM messed up after I get it tunned.
Reply
Old Aug 20, 2006 | 07:36 PM
  #33  
qwikz28's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2004
Posts: 2,491
Likes: 2
From: Franklin Lakes, NJ
Default

doesnt first gear also have a lock-out? thats the only gear i'm having trouble with
Reply
Old Aug 20, 2006 | 08:39 PM
  #34  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

Don't think so. When are you having trouble getting into it?
Reply
Old Aug 20, 2006 | 09:12 PM
  #35  
qwikz28's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2004
Posts: 2,491
Likes: 2
From: Franklin Lakes, NJ
Default

Originally Posted by Black01M6SS
Don't think so. When are you having trouble getting into it?
off a traffic light. kinda like how you cant shift into 1st while going at a certain speed? i guess its locking it out when its not supposed to be. i usually just pump the clutch once or twice and it works again, if not, i just force it in there

definately pcm related man, everything trans related is falling apart after this clutch install
Reply
Old Aug 20, 2006 | 10:01 PM
  #36  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

Sounds to me like the clutch isn't fully disengaging. Might try bleeding it some more.

I don't think there is anything really stopping you from getting into any of the gears. Its harder to get it into lower gears at higher speeds because the syncros have to do more work when there is a large change in speed from one gear to the next. Lots of people have bent pushrods from shifting 1,2,1 at high rpms.
Reply
Old Aug 20, 2006 | 10:22 PM
  #37  
qwikz28's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2004
Posts: 2,491
Likes: 2
From: Franklin Lakes, NJ
Default

Originally Posted by Black01M6SS
Sounds to me like the clutch isn't fully disengaging. Might try bleeding it some more.

I don't think there is anything really stopping you from getting into any of the gears. Its harder to get it into lower gears at higher speeds because the syncros have to do more work when there is a large change in speed from one gear to the next. Lots of people have bent pushrods from shifting 1,2,1 at high rpms.
it only happens at a stop going into first gear. and it doesnt feel hard, it feels like something is in the way. the first gear thing is recent, the reverse lockout problem happened right after the clutch install (which i didnt do btw)
Reply
Old Aug 20, 2006 | 10:48 PM
  #38  
ssman00's Avatar
TECH Regular
iTrader: (7)
 
Joined: Feb 2006
Posts: 464
Likes: 0
From: spartanburg south carolina
Default

this sounds like you need to bleed your clutch some more my car did the same thing hard to shift into first all other gears were fine ( after freshley rebuilt t56, spec clutch, gmpp slave cylinder) just bled it a few more times (it took alot of bleeding) and works perfect now
Reply
Old Aug 20, 2006 | 11:00 PM
  #39  
Black01M6SS's Avatar
Thread Starter
TECH Enthusiast
iTrader: (3)
 
Joined: Nov 2002
Posts: 546
Likes: 0
From: Louisiana
Default

Make a new topic about it and get some other opinions if you want. I'm no expert but I still think your clutch isn't fully releasing. It would be most noticeable from a stop trying to get it into first gear like you said. Once your moving it is possable to **** without a clutch. Up and down, you just have to rev match and don't force the shifter.
Reply
Old Aug 21, 2006 | 05:44 PM
  #40  
qwikz28's Avatar
TECH Addict
iTrader: (12)
 
Joined: Nov 2004
Posts: 2,491
Likes: 2
From: Franklin Lakes, NJ
Default

Originally Posted by Black01M6SS
Make a new topic about it and get some other opinions if you want. I'm no expert but I still think your clutch isn't fully releasing. It would be most noticeable from a stop trying to get it into first gear like you said. Once your moving it is possable to **** without a clutch. Up and down, you just have to rev match and don't force the shifter.
i'm more concerned about the reverse at this point. i was just assuming the two problems were related. i guess not
Reply



All times are GMT -5. The time now is 05:34 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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