Chevy Document ID# 1982105
Thread Starter
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Chevy Document ID# 1982105
Hi Ken and Bob,
I'm trying to locate the text of Document ID# 1982105, published in June. Deals with a new requirement for 24-month flush interval on the clutch fluid, which affects all C5/C6 M6/M12 owners.
I've seen a ref to it here: http://www.corvettemechanic.com/foru...read.php?t=894
And got the ID number elsewhere.
These docs make it to the Corvette Forum at some point. I'd like to see that happen with this particular doc.
Any chance you can post the text of this doc?
Many thanks,
Ranger
I'm trying to locate the text of Document ID# 1982105, published in June. Deals with a new requirement for 24-month flush interval on the clutch fluid, which affects all C5/C6 M6/M12 owners.
I've seen a ref to it here: http://www.corvettemechanic.com/foru...read.php?t=894
And got the ID number elsewhere.
These docs make it to the Corvette Forum at some point. I'd like to see that happen with this particular doc.
Any chance you can post the text of this doc?
Many thanks,
Ranger
Le Mans Master
Joined: May 1999
Posts: 6,841
Likes: 46
From: Laurel MT
Cruise-in I Veteran
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Cruise-In III Veteran
Document ID# 1982105
Subject: Intermittent Spongy Clutch Pedal Sticking To The Floor During Hard Acceleration And High RPM Shifts - keywords contaminate fluid hydraulic #PIP4145 - (06/04/2007)
Models: 2005-2007 Chevrolet Corvette, Corvette Z06 Equipped with a Tremec 6-speed Transmission RPO MM6, MZ6
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The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment about an intermittent spongy clutch pedal feel or clutch pedal sticking to the floor. This may be aggravated by aggressive driving and high clutch operating temperatures. Higher than expected levels of water in the clutch fluid greater than 2% may cause the clutch fluid to boil. The presence of water in the fluid lowers the boiling point significantly; when these conditions are present the driver may lose customary clutch pedal feel and performance.
Recommendation/Instructions:
If the above condition is intermittent flush the hydraulic system using DOT 4 fluid part number 88958860 (88901244 in Canada), prior to replacement of any mechanical or hydraulic components.
To eliminate the opportunity for moisture to enter the clutch hydraulic system.
The clutch fluid level inspection should be a VISUAL inspection only. Look through the transparent reservoir and observe the fluid level. Avoid removing the cap. Do not remove the cap just to top-off clutch fluid. Leave the system closed and sealed. During PDI inspection or routine servicing the cap should not be opened for just an inspection.
DOT 4 clutch fluid has a 2 week shelf life. Do not use fluid if container opening date is unknown or older than 2 weeks. Do not mix or re-use old fluid. Current service information already covers the issue of reuse.
To provide the best clutch operation, it is recommended that the owner change the clutch fluid every 2 calendar years. Please flush and replace the clutch fluid with P/N 88958860 (88901244 in Canada) or equivalent DOT 4.
The current service information and owners manual will be updated to reflect this information.
Note: If the concern is not intermittent, inspect clutch hydraulic system for leaks and repair as necessary after repairs are completed flush system with DOT 4 fluid part number 88958860 (88901244 in Canada).
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Subject: Intermittent Spongy Clutch Pedal Sticking To The Floor During Hard Acceleration And High RPM Shifts - keywords contaminate fluid hydraulic #PIP4145 - (06/04/2007)
Models: 2005-2007 Chevrolet Corvette, Corvette Z06 Equipped with a Tremec 6-speed Transmission RPO MM6, MZ6
--------------------------------------------------------------------------------
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment about an intermittent spongy clutch pedal feel or clutch pedal sticking to the floor. This may be aggravated by aggressive driving and high clutch operating temperatures. Higher than expected levels of water in the clutch fluid greater than 2% may cause the clutch fluid to boil. The presence of water in the fluid lowers the boiling point significantly; when these conditions are present the driver may lose customary clutch pedal feel and performance.
Recommendation/Instructions:
If the above condition is intermittent flush the hydraulic system using DOT 4 fluid part number 88958860 (88901244 in Canada), prior to replacement of any mechanical or hydraulic components.
To eliminate the opportunity for moisture to enter the clutch hydraulic system.
The clutch fluid level inspection should be a VISUAL inspection only. Look through the transparent reservoir and observe the fluid level. Avoid removing the cap. Do not remove the cap just to top-off clutch fluid. Leave the system closed and sealed. During PDI inspection or routine servicing the cap should not be opened for just an inspection.
DOT 4 clutch fluid has a 2 week shelf life. Do not use fluid if container opening date is unknown or older than 2 weeks. Do not mix or re-use old fluid. Current service information already covers the issue of reuse.
To provide the best clutch operation, it is recommended that the owner change the clutch fluid every 2 calendar years. Please flush and replace the clutch fluid with P/N 88958860 (88901244 in Canada) or equivalent DOT 4.
The current service information and owners manual will be updated to reflect this information.
Note: If the concern is not intermittent, inspect clutch hydraulic system for leaks and repair as necessary after repairs are completed flush system with DOT 4 fluid part number 88958860 (88901244 in Canada).
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Thread Starter
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Document ID# 1982105
Subject: Intermittent Spongy Clutch Pedal Sticking To The Floor During Hard Acceleration And High RPM Shifts - keywords contaminate fluid hydraulic #PIP4145 - (06/04/2007)
Models: 2005-2007 Chevrolet Corvette, Corvette Z06 Equipped with a Tremec 6-speed Transmission RPO MM6, MZ6
--------------------------------------------------------------------------------
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment about an intermittent spongy clutch pedal feel or clutch pedal sticking to the floor. This may be aggravated by aggressive driving and high clutch operating temperatures. Higher than expected levels of water in the clutch fluid greater than 2% may cause the clutch fluid to boil. The presence of water in the fluid lowers the boiling point significantly; when these conditions are present the driver may lose customary clutch pedal feel and performance.
Recommendation/Instructions:
If the above condition is intermittent flush the hydraulic system using DOT 4 fluid part number 88958860 (88901244 in Canada), prior to replacement of any mechanical or hydraulic components.
To eliminate the opportunity for moisture to enter the clutch hydraulic system.
The clutch fluid level inspection should be a VISUAL inspection only. Look through the transparent reservoir and observe the fluid level. Avoid removing the cap. Do not remove the cap just to top-off clutch fluid. Leave the system closed and sealed. During PDI inspection or routine servicing the cap should not be opened for just an inspection.
DOT 4 clutch fluid has a 2 week shelf life. Do not use fluid if container opening date is unknown or older than 2 weeks. Do not mix or re-use old fluid. Current service information already covers the issue of reuse.
To provide the best clutch operation, it is recommended that the owner change the clutch fluid every 2 calendar years. Please flush and replace the clutch fluid with P/N 88958860 (88901244 in Canada) or equivalent DOT 4.
The current service information and owners manual will be updated to reflect this information.
Note: If the concern is not intermittent, inspect clutch hydraulic system for leaks and repair as necessary after repairs are completed flush system with DOT 4 fluid part number 88958860 (88901244 in Canada).
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Subject: Intermittent Spongy Clutch Pedal Sticking To The Floor During Hard Acceleration And High RPM Shifts - keywords contaminate fluid hydraulic #PIP4145 - (06/04/2007)
Models: 2005-2007 Chevrolet Corvette, Corvette Z06 Equipped with a Tremec 6-speed Transmission RPO MM6, MZ6
--------------------------------------------------------------------------------
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment about an intermittent spongy clutch pedal feel or clutch pedal sticking to the floor. This may be aggravated by aggressive driving and high clutch operating temperatures. Higher than expected levels of water in the clutch fluid greater than 2% may cause the clutch fluid to boil. The presence of water in the fluid lowers the boiling point significantly; when these conditions are present the driver may lose customary clutch pedal feel and performance.
Recommendation/Instructions:
If the above condition is intermittent flush the hydraulic system using DOT 4 fluid part number 88958860 (88901244 in Canada), prior to replacement of any mechanical or hydraulic components.
To eliminate the opportunity for moisture to enter the clutch hydraulic system.
The clutch fluid level inspection should be a VISUAL inspection only. Look through the transparent reservoir and observe the fluid level. Avoid removing the cap. Do not remove the cap just to top-off clutch fluid. Leave the system closed and sealed. During PDI inspection or routine servicing the cap should not be opened for just an inspection.
DOT 4 clutch fluid has a 2 week shelf life. Do not use fluid if container opening date is unknown or older than 2 weeks. Do not mix or re-use old fluid. Current service information already covers the issue of reuse.
To provide the best clutch operation, it is recommended that the owner change the clutch fluid every 2 calendar years. Please flush and replace the clutch fluid with P/N 88958860 (88901244 in Canada) or equivalent DOT 4.
The current service information and owners manual will be updated to reflect this information.
Note: If the concern is not intermittent, inspect clutch hydraulic system for leaks and repair as necessary after repairs are completed flush system with DOT 4 fluid part number 88958860 (88901244 in Canada).
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
I've spent six years working on this issue. Delighted to see that GM has acknowledged a root cause is degraded fluid. Taking Care of Your Clutch
Clutch pedal issues affect many brands, Corvette, F-Bodies, GTO, Infiniti, Isuzu, and the list is growing. Changing the clutch fluid resolves most of them.
Appreciate your help in keeping members informed.
Ranger
Drifting
Joined: Feb 2002
Posts: 1,260
Likes: 0
From: Chapel Hill NC
"The clutch fluid level inspection should be a VISUAL inspection only. Look through the transparent reservoir and observe the fluid level. Avoid removing the cap. Do not remove the cap just to top-off clutch fluid. Leave the system closed and sealed. During PDI inspection or routine servicing the cap should not be opened for just an inspection.
DOT 4 clutch fluid has a 2 week shelf life. Do not use fluid if container opening date is unknown or older than 2 weeks. Do not mix or re-use old fluid."
This is why a root cause analysis is always needed. I wonder how many people were inspecting the fluid condition by removing the cap or keeping fluid containers after opening longer than two weeks before reusing.
I don't think this one is over yet. One sourcde of contamination has been identified. There's a reasonable question as to the existenance of other sources.
DOT 4 clutch fluid has a 2 week shelf life. Do not use fluid if container opening date is unknown or older than 2 weeks. Do not mix or re-use old fluid."
This is why a root cause analysis is always needed. I wonder how many people were inspecting the fluid condition by removing the cap or keeping fluid containers after opening longer than two weeks before reusing.
I don't think this one is over yet. One sourcde of contamination has been identified. There's a reasonable question as to the existenance of other sources.
Burning Brakes
Joined: Mar 2006
Posts: 1,195
Likes: 25
From: Tacoma WA
This was pretty useful thanks.
Yesterday I flushed my hydraulic system (professionally) and tested the results.
Before the flush, if i brought any gear up to 6000+ RPM the clutch wouldn't come up more than 2-3" off the floor...
After the flush, i made 4-5 passes. The first 3 the pedal returned normally and i was stoked. The 4th and 5th pass were 1-2-3-4 shifts, and i could feel the pedal got a little slow up top, it returned all the way, but i could feel a slight stall up top on the pedal. I suspect with enough driving the condition might return.
It is obvious that the fluid had a drastic impact on my clutch. I'm hoping i can keep it clean and clear for a while, and enjoy a mostly normal functioning clutch...
-Dan
Yesterday I flushed my hydraulic system (professionally) and tested the results.
Before the flush, if i brought any gear up to 6000+ RPM the clutch wouldn't come up more than 2-3" off the floor...
After the flush, i made 4-5 passes. The first 3 the pedal returned normally and i was stoked. The 4th and 5th pass were 1-2-3-4 shifts, and i could feel the pedal got a little slow up top, it returned all the way, but i could feel a slight stall up top on the pedal. I suspect with enough driving the condition might return.
It is obvious that the fluid had a drastic impact on my clutch. I'm hoping i can keep it clean and clear for a while, and enjoy a mostly normal functioning clutch...
-Dan
