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12-23-2008, 05:05 PM
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#1 |
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Registered User
Join Date: Jan 2007
Location: Beaufort, SC
Posts: 244
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Transmission
How do you know when a transmission is shot? Mine is not shifting out of first gear and the fluid is a brownish color.
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12-23-2008, 05:13 PM
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#2 |
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Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Transmission
Fluid sounds like it's burnt. Might want to change fluid and filter. Check your vacuum line on the modulator.
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Beat it to fit, Paint it to match... 
Last edited by Sinister; 12-23-2008 at 05:15 PM. |
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12-23-2008, 05:53 PM
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#3 |
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I wish I was a cowboy
 
Join Date: Apr 2008
Location: Rohnert Park, CA
Posts: 409
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Re: Transmission
Gotta take the pan down and check the fluid and filter for metal shavings. If non found, filler back up, run it in park til the engine is all the way hot, drive it nicely around the block and see if the problem returns.
TH400 or 350?
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-Kris Met list: Cyclone,Wilson,TranzAm,extd56,hotrodhomi,mnky30,Rokcrln,Brad,JerryJones(well, his truck anyway). |
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12-23-2008, 06:06 PM
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#4 |
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Senior Member
Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,861
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Re: Transmission
I agree with above,check the modulator.Take the vac.hose off the modulator (just trace the line down from the back of the engine to the trans) and see if there is vacuum there.Also check that the diaphram in the modulator isn't shot,if it is you might see fluid there and it will not hold vacuum.
Another cause of a trans. sticking in 1st is a stuck governor (inside the round cover on the right iirc.) From what you are saying,it isn't slipping during an attempted shift, correct?
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, 2nd owner, Work-Truck supreme. Best $300 I ever spent. |
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