90k is nothing for the 4.3 which will easily run to 200k; the 4L60e
transmission is decent IF the prior owner changed the fluid at regular
intervals and didn't haul anything too heavy with the truck. Can't answer
the question if it's a bad investment as I haven't seen it and don't know
what the sticker is.
My buddy just bought a 00' Blazer w/75k and he loves it. Great little
Given fluid and filter changes every 15k (Mobil 1 ATF and OE filters) and
ZERO hauling on a 98' Sonoma SLS (the wifey's truck), how long <should> the
TCC regulator valve hold out? What about the nefarious P1870. How long
with perfect maintenance does one have?
OK, OK, OK. I had a '98 that I got rid of because of the studdering and then
the hard shift from first to second. It was that valve, I believe. I bought
my 2002 with a stick just to make sure I didn't get that problem again. My
question is: Why hasn't GM just done a total recall and then fixed the thing
from the start. Maybe put a sleeve in from the factory, etc.?
Because most of them blow after the warranty is up so they don't care?
Christmas is coming and then,
We'll proclaim our love of all men.
But be of good cheer,
Come the change in the year,
We can all be bastards again.
well, since the wear is in the valve body itself, it must be replaced with a
I bought the reamer to do it, since I see anywhere from 3-8 a month
If you catch it right when it starts (first instance of code P1870
appearing), reaming and sleeving the valve body will fix it
If you keep driving it, it doesn't take long to fry the converter clutch
Best solution? Take it to an independent transmission shop that does a lot
of trucks, ask them if they can do the 'Sonnax' repair to the torque
converter regulator valve
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