Don't replace fuel sending unit
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 922
Likes: 1
From: Lexington KY
Don't replace fuel sending unit
Just got my 2k back from Chevy dealer. They wanted to replace my fuel sending unit as they had several others to resolve erratic fuel gauge problem. After "doing some research" they finall found the TSB that I told them about (thanks forum). The new fix is (for me) free of charge and will even possibly work. It is a software problem involving the PCM. There is also another upgrade they did at the same time w/o notifying me(another TSB they found). They couldn't tell me what that was for. They did tell me they used the SPECIAL TOOL. Hope this works. If anyone else has has this done let me know if it works.
Race Director
Joined: Jan 2000
Posts: 15,707
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From: Lynnfield MA
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Re: Don't replace fuel sending unit (bozo4onion)
My connections at the sending units were corroded which was the issue so for some vettes it may be more than one problem…
Nick
Nick
Race Director
Joined: Aug 2001
Posts: 17,901
Likes: 18
From: Elko, Nevada
Re: Don't replace fuel sending unit (bozo4onion)
This is was one of the first serious issues with the C5. Even before
the dreaded column lock. That TSB has GOT to be dated from 98'
or 99'. It was a definite problem on a good many 97-99 cars.
It happened to me too(under warranty), 6-months after purchase.
4-years and 70k miles later not a problem.
:cheers:
the dreaded column lock. That TSB has GOT to be dated from 98'
or 99'. It was a definite problem on a good many 97-99 cars.
It happened to me too(under warranty), 6-months after purchase.
4-years and 70k miles later not a problem.
:cheers:
Melting Slicks
Joined: Apr 2002
Posts: 2,397
Likes: 55
From: Dove Mountain, AZ
Re: Don't replace fuel sending unit (bozo4onion)
Just had mine replaced last week on my 2002. They said I already had the latest program loaded.
[Modified by TXSTICK, 7:52 AM 7/18/2003]
[Modified by TXSTICK, 7:52 AM 7/18/2003]
Race Director
Joined: Oct 1999
Posts: 17,709
Likes: 1,219
From: Phila PA, Bonita Springs FL
Re: Don't replace fuel sending unit (TXSTICK)
<EDIT>
Sorry bro.. Looks like you're right.. New PCM program for 1999-2000 :party:
Hope it works.. 4 sets for me so far...! :mad
[Modified by indypace78, 8:02 AM 7/19/2003]
Sorry bro.. Looks like you're right.. New PCM program for 1999-2000 :party:
Hope it works.. 4 sets for me so far...! :mad
[Modified by indypace78, 8:02 AM 7/19/2003]
Instructor
Joined: May 2003
Posts: 210
Likes: 1
From: Ashburn VA
Re: Don't replace fuel sending unit (bozo4onion)
This recently happened to my 2000 vert with 18k on it. Turning off the engine and restarting seemed to clear the problem. Question, if the gauge should quit altogether, would the display that calculates remaining fuel and DTE still work? If so, I guess i could still judge when fuel is running low by keeping an eye on the DTE... . any thoughts on this? :steering:
Pro
Joined: Oct 2002
Posts: 522
Likes: 0
From: Ridgeland MS
Re: Don't replace fuel sending unit (Bazzer)
This recently happened to my 2000 vert with 18k on it. Turning off the engine and restarting seemed to clear the problem. Question, if the gauge should quit altogether, would the display that calculates remaining fuel and DTE still work? If so, I guess i could still judge when fuel is running low by keeping an eye on the DTE... . any thoughts on this? :steering:
Mine has been replaced 3 times. 1st owner, 2nd owner (weeks before I purchased the car), myself (failed the 2nd day I had the car). Only one scare since I have had it replaced 10 months (10k miles) ago (scared 'cause now it is out of warranty and will be fixed out of MY pocket).
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Former Vendor
Joined: Apr 2001
Posts: 10,976
Likes: 21
From: FL
St. Jude Donor '13
Re: Don't replace fuel sending unit (indypace78)
I say :bs .
The computer reprogramm to fix the sending unit issue is for 2001 & up.
The 2000 PCM cannot take that adjustment.
The computer reprogramm to fix the sending unit issue is for 2001 & up.
The 2000 PCM cannot take that adjustment.
Erratic Fuel Gauge Reading (Reprogram the PCM) #02-06-04-010A - (06/27/2003)
Erratic Fuel Gauge Reading (Reprogram the PCM)
1999-2002 Chevrolet Corvette
This bulletin is being revised to add models and update the Correction and Warranty Information. Please discard Corporate Bulletin Number 02-06-04-010 (Section 06- Engine).
Condition
Some owners may comment about the fuel gauge intermittently indicating an empty reading and then return to the correct fuel level indication.
Cause
This condition may result when fuel blends containing aggressive sulphur compounds react with the fuel sender assembly, which may result in voltage spikes being induced on the fuel level signal to the PCM. Use of another fuel blend may reverse this reaction and return the system to normal operation.
Correction
Reprogram the PCM with the new service calibration which is available in the June 2003, Techline® TIS release sent to the dealers on 6/28/03. Use the TIS Version 7 or later data update.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
J6354
Powertrain Controller - Reprogram
Use Published Time http://www.vetteshop.cc/
Safety Car
Joined: Aug 1999
Posts: 3,750
Likes: 1
From: San Jose CA
Re: Don't replace fuel sending unit (C-5 TECH)
Looks like the 97/98's that have this are still hosed :mad Mine is very erratic. I tried the fuel cleaner/injector cleaner drill and it still dropped to zero, then would stay for several tanks, and drop again for X number of starts(no pattern at all) and then come back and be accurate. I now depend on the trip odometer and hit gas every 325-350 miles. This is pretty pathetic. :bs :boxing
Advanced
Joined: Jul 2018
Posts: 53
Likes: 2
From: TYLER,TX.
Thanks for this info. Recently purchased a 2000 c5 M6 w/126,000 on odometer. Am I out of luck for a warrnty fix by the general? Also i found 3-4 more TSB's. I've noticed my steering wheel does'nt lock when key removed. don't no if this is fix or what, the previous owner has no idea either. I will reach out to my local dealer. Any info on the c5 Gremlins woild be helpful. Best, G. E. INFORM@: etcazr1-ail@yahoo.com/.
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
Thanks for this info. Recently purchased a 2000 c5 M6 w/126,000 on odometer. Am I out of luck for a warrnty fix by the general? Also i found 3-4 more TSB's. I've noticed my steering wheel does'nt lock when key removed. don't no if this is fix or what, the previous owner has no idea either. I will reach out to my local dealer. Any info on the c5 Gremlins woild be helpful. Best, G. E. INFORM@: etcazr1-ail@yahoo.com/.
