Question about 1993 Chevrolet K1500
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Posted on Jan 02, 2017
This is most likely the first signs of transmission failure. There's not much you can do aside from getting it rebuilt. This should be a 700 R4 they're a pretty easy transmission to rebuild, however you want to do it sooner than later. Many of the parts can be re-used IF you don't let it go too long. I've rebuilt hundreds of these and I'm here to tell you that I'd rather not destroy 500-600 dollars worth of hard parts if I don't have to.
Posted on Nov 09, 2009
check fluid level AND condition...should a red color...if its discolored, in any way, flush it and change the filter too...then perhaps there is a band that is out of adjustment allowing the flare up, and it suddenly grabs getting the hard shift....or else trans is worn out....check the fluid
Posted on Nov 19, 2009
you may be confusing the torque converter clutch engagement with o.d. this trans has a problem with the T.C.C. regulator valve wearing out the valve body bore. this will cause the converter clutch to engage only sometimes or not at all. this will set a P1870 code in the control module. when this code is stored in the controller, ( check engine light may or may not be on), it increases the pressure in the transmission causing the 1-2 shift to be harsh. ask a local tranny shop to scan the vehicle ( most will do this for free) if this is the problem they can either fix your valve body (sonnax parts) or replace it with an upgraded valve body. hope this helps
Posted on Dec 16, 2009
rec check fluid first. If trans fluid hasn't been changed in last 30,000 miles change fluid, filter and pan gasket. At that time inspect for foreign materials in bottom of pan or on magnet if you have one. If truck has over 100K and fluid was never changed you may have more problems if changing the fluid.
Posted on Jun 17, 2010
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