View Single Post
Old 07-18-2014, 01:10 PM   #5
j cAT
AF Fanatic
 
Join Date: Oct 2007
Location: EVERETT, Massachusetts
Posts: 10,898
Thanks: 8
Thanked 432 Times in 431 Posts
Re: 1997 Chevrolet Silverado 4x4 z71

Quote:
Originally Posted by qhad View Post
(j cat) Not valve bodies but the 1-2 3-4 solenoids, filter and fluid changed so they told me at the time of service. It has 153K (miles)

(777stickman) the wiring and vcm your talking about, is it located on the outside or inside the trans... ?
with the mileage I would lean toward the valve bodies being eroded by the DEXRON III fluid. with pressure loss this then occurs.

I would replace the ignition switch first . many with this age vehicle have had odd type tranny problems .. even if it is not corrected this model . this mileage it should be replaced. contacts supplying power to transmission fail with the old switch...

if you replaced the tranny fluid every 70-100K miles then the valve bodies and other parts must be worn which causes a loss in fluid pressures...then the harsh shifting ...
j cAT is offline   Reply With Quote