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Old September 11th, 2006, 07:48 AM   #1
Mongo
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Default 01 tcase question

A friend of mine has an 01 gmc Seira?(whatever a GMC version of a silverado would be)
Evadently the shift motor has failed in the t-case. Can just the motor be replaced or does the whole t-case have to be changed? also, bone yard or stealership.

Any info would be helpful.

Thanks, Craig

Last edited by Mongo; September 11th, 2006 at 07:49 AM. Reason: spelling
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Old September 11th, 2006, 08:05 AM   #2
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don't know for sure, but I believe the shift motor can be replaced by itself. should be external to the T-case, but mounted on the T-case. check the stealership, to get a new price. possibly Murray's, not sure if you've heard of Shultz junk yard in Capac, lots of vehicles in there yard. if it's not on the shelf you can look for the vehicle and take it off yourself. word to the wise, make your deal before you take it off. I would say they are pretty high for a do it yourself boneyard.
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Old September 11th, 2006, 08:32 AM   #3
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This might help.

AWK


Transfer Case Motor/Encoder Replacement
Removal Procedure




Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
Remove the transfer case shield. Refer to Transfer Case Shield Replacement .
Remove the front propeller shaft. Refer to Propeller Shaft Replacement - Front in Propeller Shaft.
Remove the motor/encoder electrical connectors.



Remove the motor/encoder mounting bolts.
Remove the motor/encoder assembly.
Remove the motor/encoder gasket.
Installation Procedure




Important:

If the motor/encoder assembly is being replaced because it is defective, make sure that the transfer case is in the neutral position. Manually shift the unit at the shift shaft. Use a crescent wrench if necessary.

When installing the motor/encoder unit to the transfer case, make sure that the transfer case is indexed properly and it is flat against the transfer case before tightening the mounting bolts.


Install the NEW motor/encoder gasket to the transfer case.
Install the motor/encoder to the transfer case.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install motor/encoder mounting bolts.

Tighten
Tighten the bolts, in the sequence shown, to 20 Nm (15 lb ft).





Install the motor/encoder electrical connector. Ensure that the retention clips activate.
Install the front propeller shaft. Refer to Propeller Shaft Replacement - Front in Propeller Shaft.
Install the transfer case shield. Refer to Transfer Case Shield Replacement .
Lower the vehicle.
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Old September 12th, 2006, 07:13 PM   #4
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The motor/encoder can be replaced seperatly. I would try to find a used one, the last one we got from the dealer was around $500.

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