C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Pcm Reset

Thread Tools
 
Search this Thread
 
Old Feb 15, 2006 | 12:07 PM
  #1  
INTHERED's Avatar
INTHERED
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Aug 2003
Posts: 1,070
Likes: 9
From: MARRIOTTSVILLE MD
Default Pcm Reset

Sometimes when I start my car my PCM gets reset and yes I do have
a new battery that measures 12 volts with the key on and 14 volts with
the car running. Has anyone seen this problem ?

Thanks >>>>> INTHERED
Reply
Old Feb 15, 2006 | 03:27 PM
  #2  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

You have a bad connection some where that is allowing the PCM voltage to drop below the PCM's minimum voltage requirement. I would start with battery cables (clean and torque the cables on the battery to 12 ft/lbs) and then clean the grounds. Especially the PCM related grounds.

Bill C
Reply
Old Feb 16, 2006 | 11:06 AM
  #3  
INTHERED's Avatar
INTHERED
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Aug 2003
Posts: 1,070
Likes: 9
From: MARRIOTTSVILLE MD
Default

Originally Posted by Bill Curlee
You have a bad connection some where that is allowing the PCM voltage to drop below the PCM's minimum voltage requirement. I would start with battery cables (clean and torque the cables on the battery to 12 ft/lbs) and then clean the grounds. Especially the PCM related grounds.Bill C
Well I checked the cables and connections and they are all good.
I looked in the shop manual and the PCM uses ground G106. Does
anyone know where this is located ?
Reply
Old Feb 16, 2006 | 01:27 PM
  #4  
cliff_ford's Avatar
cliff_ford
Racer
15 Year Member
 
Joined: Aug 2005
Posts: 388
Likes: 6
Default

G106

Engine harness, RH side of the engine, above the starter (CKT 451)
Reply
Old Feb 16, 2006 | 09:47 PM
  #5  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

Yep,,, I think it's a 15mm bolt and there will be TWO ground wires connected to it.
Reply
Old Feb 20, 2006 | 12:14 PM
  #6  
INTHERED's Avatar
INTHERED
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Aug 2003
Posts: 1,070
Likes: 9
From: MARRIOTTSVILLE MD
Default

Originally Posted by Bill Curlee
Yep,,, I think it's a 15mm bolt and there will be TWO ground wires connected to it.
This 15mm bolt is it bolted to the block or the frame ?

Can I get to it from the top or do I need a lift ?
Reply
Old Feb 20, 2006 | 10:24 PM
  #7  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

There are TWO ground bolts on the lower portion of the block. They are located just below (approx) # 3 and #4 cylinders sparkplugs. I have a picture of the bolt. Send me your e-mail address and I will send them to you.

BC
Reply
Old Feb 21, 2006 | 05:35 PM
  #8  
INTHERED's Avatar
INTHERED
Thread Starter
Burning Brakes
20 Year Member
 
Joined: Aug 2003
Posts: 1,070
Likes: 9
From: MARRIOTTSVILLE MD
Default

Originally Posted by Bill Curlee
There are TWO ground bolts on the lower portion of the block. They are located just below (approx) # 3 and #4 cylinders sparkplugs. I have a picture of the bolt. Send me your e-mail address and I will send them to you. BC
Bill

Thanks for the information after spending several hours searching
thru my shop manuals last nite I finally found a drawing of the bolt
location in the starter removal section of the manual.

Mike
Reply

Get notified of new replies

To Pcm Reset

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo




All times are GMT -4. The time now is 02:29 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE