VCCA Home Forums GENERAL DISCUSSION New User Forum issues maybe electrical need help or a match

99 chevy silverado 1500 4.3l manual
will not start only code it threw was P1351 ignition control circuit voltage high.
my reverse lights were not working so i checked fuse and it was bad replaced it then checked lights. there working yet when i tried to start it NOTHING.
just cranks and cranks. so i checked fuses again and found my 50 amo fuse "ignition" was bad replaced that still nothing!!
when i try and start it or when its cranking the fuel gage falls to E and the milage goes to 000000 also battery light is on in the info box. as soon as i stop trying to start it the gas and miles go back to full and milage is normal yet battery light is still on.. now i have not touch anything for it to have to be anything crazy.

fuel is fine and pressure
new crank sensor

i have read all kinds of different things online and a lot of them have almost same issue but still nothing either they dont keep up on there discussion or there problem ive tried and not it.. i think its something to do with my electrical.
as soon as i put new fuse in for reverse lights the ignition fuse blew so i unhooked tail lights all together. nothing.....
i am at a loss and could use some advice or a really good match cause i am about done with the truck thank you for any help

Brandie,
I have a '97 Silverado with 7.4l and automatic. A month ago i drove
it in with intention of figuring out occasional motor turning off
while driving. Very disconcerting when in traffic!!
With advice from my 45 yr old son via phone I began the search by
replacing the fuel pump- no easy job. Then truck would not start and
has not since despite MANY hours of diagnosis and replacement of relays
oil psi sending unit, fuel psi regulator. I own the shop manuals for
this- all 8 inches thick of them and read the diagnostic procedures
then performed what I could. Since I live in the middle of no where
with the nearest Chevy dealer 50 miles away this is MY problem to solve. Several points to consider-
1. GM had many electrical problems with these trucks.
2. without the proper "scanner" and considerable knowledge of how
to interpret test results an owner can only replace sensors and
other devices based on advice from "experienced" folks or finding
a reputable shop to do it for them.
3. Virtually everything electrical in these trucks is tied to the
VCM (computer).That has only gotten worse in the last 15 yrs.
So there are dozens of connections leading to or from this
monster that can have oxidized/ frayed /or broken. everything
is inter-connected so a circuit problem in one place can have
impact else-where.
4. The programning of the VCM is not something GM cared to share
with the world. Even the dealer shops have limited knowledge
of this but ARE equipped with test devices (at 100$ per hour).
So, unless you wish to give a Chevy dealer full rein to solve the
problem (s) you/I are back to number 2 above. Currently my brainy
son thinks it could be the ignition switch--something the 'old' GM
had experience screwing up. Then again my son has replaced his Chevy
truck fleet with F***s in the last two years after tiring of Chevy
shop time.
Good luck pursuing your problem. Maybe my discussion helped
Dan

I am not familiar with the late model US vehicles I have found that when the dash does funny things on cranking the starter motor is drawing excessive current. Check and clean ALL electrical connections from battery to starter and the earths. If this fails have the starter motor serviced, suspect bushes/bearings allowing poling armature or worn brushes.

Tony

One of the main culprits of electrical problems at the heavy truck dealership I worked at was ground connections. We even had a situation where due to poor grounds the wire wrapped power steering hose was acting as the ground source causing it to rupture.

As the end result you may have to take your truck to your local Chevrolet dealer and let them deal with the problem.