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4l60e trans in a 93 gmc pickup wont shift out of 2nd, trans was redone but a shop. thinking it could be a wire not making connection......the first trans arced a wire inside the trans not sure what that could have messed up. Anyone know anything about this P.O.S?
 

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Does the oil look or smell burnt?If you have only first and second it could be your 3-4 clutch.Does the tranny feel like it wants to shift to third and slips or is there no indication that it wants to shift.If it's a faulty shift solenoid or wire it will have 1st. and 3rd. or 2nd. and 4th. only.
 

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first things first make sure it has 12 volts ,ck trans fuse in fuse box ,if it has no power it will be stuck in one gear,also if you have access to a scan tool you can see if ecm is camanding 1/2/3/4
 

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Does the oil look or smell burnt?If you have only first and second it could be your 3-4 clutch.Does the tranny feel like it wants to shift to third and slips or is there no indication that it wants to shift.If it's a faulty shift solenoid or wire it will have 1st. and 3rd. or 2nd. and 4th. only.
sorry for the mistake
should read 2nd and 3rd only if solenoid 1-2 is bad and 3rd and 4th only if solenoid 2-3 is bad.
 

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if it wont shift, take it back to the shop.
id never have one rebuilt. buy the cheapest one you can find in the boneyard (its gonna burn up anyway) or buy one directly from GM ($$$) they seem to hold up better than a bench unit from a shop. not dogging on tranny builders, its the transmission.
 

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Nitrous Junky
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Ok to verify. Does it never shift or does not shift at WOT?

My 4L60Es have no problems going full seasons in 3,800lbs+ cars at 9 seconds...
 
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