C1500 ? or K1500 or what? silverado is trim. name.
mine had a
M/T transmission. never failed me.(stick shift box, zero slush)
so what do you have under the hood engine and trans.
they tend to match by that factor, due to torque ratings.
5.7 liter there are 3 engines.with 4L60E box. my guess
Miles on truck 250K?
I guess is A/T box, automatic transmission
is car 4wd or not?
the box has PRNDL shifter lever.
does it fail in R and L too? or just DRIVE? or all 3.
DRIVE FAILURES (types , evidence)_
car will not move in drive, L or R/ drive?
drive works only in 1st gear?
drive stuck in 2nd gear.?
1>2, 2>3 or 3>?4 up fail?
or upshifts to false neutrals, aka. FLARE?
fails to down shift correctly?
TCC fails to lockup
tranny makes loud nasty noises?
cures? and tests: will on car tests are limited on any complex A/t box
shift linkage all 100% good and tested ?
1: fuses all good.
2: SCAN the PCM (tcm) OBD2 port yet
3: ATF fluid levels correct not guessing Read how.
3b: ATF does not look like
TAR nor smell burned.
4: do the service manual pump pressure port test using 300psi hand held gauge? in PRNDL , 5 tests?
that is it, OTTOMH
scan it or go broke guessing
not posting all evidence first is inviting wrong answers.
I refuse to guess, only how to do to the tests.
the shop manual on box is here, blue book
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313&_nkw=atsg+4L60e&_sacat=0
to post i guessed engine and trans.
sadly.