I have a 1998 Bazer with the 1-2 weird shift.. wiplash style every now and
then but no check engine light... I hear it was an issue...but can't find
the 4x4 instructions to repair this TTC valve which gets worn. Any info
would be great, as I am hearing all sorts conflicting info on either to ..
get a shift kit which includes the steps and valve, OR buy a new valve
body.... which is like $500.. Thanx again
On my 2000 Silverado I have been chasing this issue for years. I have
the hard 1-2 shift that's intermittent and mine did not light the
check engine light. I checked for codes and had the dreaded P1870
(IIRC). The truck was under warranty and the dealer replaced the
valve body. That lasted about 10k miles and then the P1870 was back.
I then had a Sonnax valve sleeve put in with a new valve body by an
independent shop. That lasted about 25k but luckily still under
warranty. They gave me a new transmission that had been "beefed up"
according to them and I haven't had an issue since (~25k miles). I
wish I could have just got the new trans in the first step.
I'll have to hunt for the part number, but I am sure I have it
somewhere. I was told this was better done by a shop as special tools
were required to hone out the valve bore enough to fit the sleeve.
On Apr 4, 10:50 am, email@example.com wrote:
Here's some sites that I have bookmarked when I was going to attempt
to do it myself.
Has a neat video showing the procedure. They also sell the kit.
These guys have the heavy duty sun shell carrier and the other parts
This also can be caused by a bad preesure control solenoid, a full trans
scan will reveal issues with the solenoid or slippage when the tcc is
applied, which results in boosted line pressure, some codes may be in there
also such as p1870 or p1811.
I am checking the ohm readings when the valve body is down across the
solenoids. Once tested and okay, I have a Transgo shift kit with new pwm
module to fix the above issues.. I have read on 20 sites the this shift kit
and PWN setup addresses the known issue of hard 1-2 shifts when warm... hell
only $100 and a valve body is like $500 LOL how do they sleep at night.. I
called a private tranny building guy and he said he has used this shift kit
to address the problem.
I am not sure if this does this but it descibed my vehicle to a T Where do
I get this TTC thing your talking about ?
TransGo # SK 4L60E Shift improvement / correction kit
Corrects/Prevents/Reduces: No lock-up or 4th and code 1870. Cutloose & bang
from reverse to drive; forward and low/reverse clutch burnup. 1-2 bump;
double bump; slide-bump; delayed reverse engagement hot. Includes new design
PWM boost valve. Also corrects worn valve body, rough shifts and blinking
light. No special tools needed.
For what it's worth, I have used Transgo products in other vehicles
and loved everyone of them. Any issue they were said to fix, they
did, any other "claims" to shift improvement, etc.. were met. Transgo
is very detailed when it comes to the instructions, I was able to
install my first one and had never worked on a valve body assembly
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