Frustrated-SOMEONE Out There must Know
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Well, it seems I do have fuel pressure as when I push the valve on the drivers side fuel rail I have pressure for a second. However, I still have no spark. I have checked every fuse and relay, swapping where possible. I have checked the grounds I could locate but still have not spark.
I will check the TAC and PCM module as mentioned.
I will let you all know.
I will check the TAC and PCM module as mentioned.
I will let you all know.
Le Mans Master
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From: Slave to the evil empire
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St. Jude Donor '04
Originally Posted by 1253C5
We are talking about the location as being in the engine compartment, behind the right front wheel, correct?
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You can purchase the TAC module from Fitchners Chevy mail order for $202. The list price is $400+. They are a Forum sponsor.
It can be installed without any problems or special programming. It is in the passengers wheel well behind the acces panel.
You can not test it. If you have a 97 or 98, there is a VERY strong posibility that it is bad or will be bad sooner or later. Looks like yours is sooner!
Bill
It can be installed without any problems or special programming. It is in the passengers wheel well behind the acces panel.
You can not test it. If you have a 97 or 98, there is a VERY strong posibility that it is bad or will be bad sooner or later. Looks like yours is sooner!
Bill
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OK, I found it... I will need to jack up the car and remove the wheel to get a good look at it and for easy replacement, but at least I know where it resides. I have another dumb questions, which module would it be the smaall black one or the Large silver one (that looks like it has heat sink fins on it)?
I wish I could remove it and have it tested somehow. I hate purchasing this without knowing for sure this is the issue.
I tried to find Fitchners Chevy on the internet, does anyone have the WEB site?
I wish I could remove it and have it tested somehow. I hate purchasing this without knowing for sure this is the issue.
I tried to find Fitchners Chevy on the internet, does anyone have the WEB site?
Last edited by 1253C5; Mar 6, 2005 at 08:10 PM.
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From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Originally Posted by 1253C5
OK, I found it... I will need to jack up the car and remove the wheel to get a good look at it and for easy replacement, but at least I know where it resides. I have another dumb questions, which module would it be the smaall black one or the Large silver one (that looks like it has heat sink fins on it)?
I wish I could remove it and have it tested somehow. I hate purchasing this without knowing for sure this is the issue.
I tried to find Fitchners Chevy on the internet, does anyone have the WEB site?
I wish I could remove it and have it tested somehow. I hate purchasing this without knowing for sure this is the issue.
I tried to find Fitchners Chevy on the internet, does anyone have the WEB site?
Lepus-temperamentalus
Joined: Apr 2004
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From: Roswell Ga
Oh please keep this thread going and let me know how it turns out. As the owner of a low-mileage 98, I'm VERY interested in the resolution to this problem.
As someone above said, if you haven't had this problem yet (and I haven't) you will (so I want to know what to do about it.
Damn, I almost feel like going out and buying a new TAC module and putting it on the parts shelf so I'll have it when I need it.
As someone above said, if you haven't had this problem yet (and I haven't) you will (so I want to know what to do about it.
Damn, I almost feel like going out and buying a new TAC module and putting it on the parts shelf so I'll have it when I need it.
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From: Denver CO
Originally Posted by 1253C5
OK, I found it... I will need to jack up the car and remove the wheel to get a good look at it and for easy replacement, but at least I know where it resides. I have another dumb questions, which module would it be the smaall black one or the Large silver one (that looks like it has heat sink fins on it)?
I wish I could remove it and have it tested somehow. I hate purchasing this without knowing for sure this is the issue.
I tried to find Fitchners Chevy on the internet, does anyone have the WEB site?
I wish I could remove it and have it tested somehow. I hate purchasing this without knowing for sure this is the issue.
I tried to find Fitchners Chevy on the internet, does anyone have the WEB site?
Web Site: http://www.fichtnerchevrolet.com/en_...mePage_1.chtml
E-mail them at 'parts@fichtnerchevrolet.com'
Hey, I scanned the posts and didn't see you mention what you found when checking the grounds, but I have to assume you did since you're going ahead and replacing the module???? Just wondering.
Good luck and let us know what you find.
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I found nothing on the grounds all were cleaned and checked, unless I have missed one.
The only thing I found strange was when I removed the panel accessing the TAC and PCM was a (looked like a ground wire) black wire pinched during assymbly between the access door and a screw.
However, unforrtunitly this didn't have any effect on the outcome.
The only thing I found strange was when I removed the panel accessing the TAC and PCM was a (looked like a ground wire) black wire pinched during assymbly between the access door and a screw.
However, unforrtunitly this didn't have any effect on the outcome.
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cable
this sounds so much like a problem i had an took forever to find sliight drops in voltage seem to cause fasle codes sent out by different units. believe this or not ! my problem stemed from the battery positive wire it was not conecting well enough where cable goes in lead at terminal end. new cable fixed it. cable looked an felt fine found it by hooking 12v. charger directly to starter where cable hooked up??? just a thought
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I can check the poss. wires that's for sure. Was the bad connection on the battery terminal?
I can assure everyone there is no battery leakage nor has there ever been. As a matter of fact, you would be amazed just how clean this car is under the hood. The entire under carrage and engine comparment is like show room shape. NEVER EVER been in the rain.
On a side note as I had mentioned my concern about a local car dealier in one of the above notes. I called today inquiring about the TAC module the 2 people I spoke to, one in parts and one in service ddn't know what the TAC module was.....! One of the people indicated he thought it was the ignition switch was the problem.
I then call another service garage who indicated that he had a C5 in his shop throwing the same 1518 code and he couldn't find the issue. He further stated he was about ready to "divorce" the car he was working on and return it to the owner, unrepaired...! Now I'm worried!!
I told him about the forum and indicated he should check all the ground wires as a start. He seemed interesed in the information but I find it strange how I am helping advise a professional on a car I have yet to fix.
I will soon post more as soon as I learn more.
I can assure everyone there is no battery leakage nor has there ever been. As a matter of fact, you would be amazed just how clean this car is under the hood. The entire under carrage and engine comparment is like show room shape. NEVER EVER been in the rain.
On a side note as I had mentioned my concern about a local car dealier in one of the above notes. I called today inquiring about the TAC module the 2 people I spoke to, one in parts and one in service ddn't know what the TAC module was.....! One of the people indicated he thought it was the ignition switch was the problem.
I then call another service garage who indicated that he had a C5 in his shop throwing the same 1518 code and he couldn't find the issue. He further stated he was about ready to "divorce" the car he was working on and return it to the owner, unrepaired...! Now I'm worried!!
I told him about the forum and indicated he should check all the ground wires as a start. He seemed interesed in the information but I find it strange how I am helping advise a professional on a car I have yet to fix.
I will soon post more as soon as I learn more.
Last edited by 1253C5; Mar 7, 2005 at 10:18 PM.
Heel & Toe
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From: Woodinville, WA
Previous recommendations to swap out the TAC module are rational. I believe there is a TSB regarding faulty TAC modules on earlier year cars. I know this because I had an intermittent short on the TAC module circuit (causing a blown fuse and P15xx codes), and went through a long diagnosis phase with the problem. Note: you can have failing communications between the TAC and PCM and have perfect electrical characteristics (good ground, good B+).
Good luck,
BruceBe
Good luck,
BruceBe
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BruceBe,
Do you know where I can get a copy of the TSB regarding this TAC module?
I am currently waiting to hear back from Fitchners Chevy on f this unit would be returnable if it desn't fix the issue? But from the sounds of things, maybe I want to replace it anyway????
Do you know where I can get a copy of the TSB regarding this TAC module?
I am currently waiting to hear back from Fitchners Chevy on f this unit would be returnable if it desn't fix the issue? But from the sounds of things, maybe I want to replace it anyway????
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Update---
ALL,
Bill was correct, it was the TAC module....!
Thanks to everyone who shared thier thoughts with me.
I didn't realize just how many friend I have.
THANKS AGAIN
Rod
Last edited by 1253C5; Mar 11, 2005 at 07:21 PM.
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by 1253C5
ALL,
Bill was correct, it was the TAC module....!
Thanks to everyone who shared thier thoughts with me.
I didn't realize just how many friend I have.
THANKS AGAIN
Rod
Bill was correct, it was the TAC module....!
Thanks to everyone who shared thier thoughts with me.
I didn't realize just how many friend I have.
THANKS AGAIN
Rod
For future reference: Fichtner Chevrolet
1-800-234-5284
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