transmission

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  #1  
Old 06-12-02, 09:57 AM
nanamaness
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Question transmission

1997 GMC 1500 conversion van 350 engine 56000 miles. transmission kind of jerks when it goes into first gear, feels like someone bumped you in the rear. it only does this the first time it changes gears and it doesn't always do it. we first noticed this a few days ago.
 
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  #2  
Old 06-12-02, 11:01 AM
Joe_F
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Check www.alldata.com for known bulletins on this issue.

When's the last time the fluid and filter were done?
 
  #3  
Old 06-12-02, 06:05 PM
nanamaness
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transmission

I don't know when the fluid and filter was changed when bought it about 1 1/2 years ago , it had 48000 miles on it then now it has 56000. we haven't changed it. we checked the fluid it is full but looks dark.
 
  #4  
Old 06-13-02, 03:39 AM
Joe_F
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The fluid should be pink and have no grit or smell.

It should probably be changed. Be forewarned that sometimes changing really dirty fluid in a tranny has the effect of washing it out and possibly ruining it, necessitating a rebuild.
 
  #5  
Old 06-13-02, 05:28 PM
MONTI80
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TRANSMISSION

ONLY DO A TRANSMISSION SERVICE IF IT HAS BEEN DONE REGULALY, IF NOT DONE AT SUGGESTED MILES IT COULD DO MORE HARM, (IT COULD) WE HAVE FOUND THAT TRANSMETIC ALSO WORK WELL. IT COULD TAKE A COUPLE OF DAYS TO START WORKING, BUT NEVER FOUND IT TO DO HARM. BUT YOU SHOULD ALWAYS KEEP UP ON TRANSMISSION SERVICES!!

GOOD LUCK
 
  #6  
Old 06-13-02, 06:49 PM
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Location: Pittsburgh,Pa
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Your trans fluid should be red to light brown if so change it.It should not be pink that indicates coolant in the transmission and you would need an overhaul and the cooler replaced.Coolant deteriates the internal rubber seals and can cause clutch plates in the trans to separate.If this is a morning only problem it may be what is known as converter drainback.If it is I would not worry as drainback does not damage the trans as long as you wait until the gear engages.I almost forgot if its dark brown fluid your taking your chances.
 
  #7  
Old 06-13-02, 09:01 PM
Joe_F
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Yea, it's more a juicy red, that is true

Either way, you can see from a bottle of new fluid what it should look like.

Transmission services with filter every 25k are the key to tranny longevity in the long run.
 
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