1993 Chevy S-10 blazer Vortec 4.3L.
Replaced transmission w/rebuilt.
Question = Before I had the trans replaced, it went into what I believe
is a safety mode- only 1 or 2 gears would operate. (it had run fine
with no problems for 240K miles) However after having put in a new
unit, the same thing happened. Have now sent it back to the
transmission shop 6 times. Each time they would return it, after
driving about 150 miles, the same thing happened. The shop claims
there is a short in the wiring somewhere and a fuse is blowing, but as
of now, they have been unable to find the problem. Any other ideas?
Replaced transmission w/rebuilt.
Question = Before I had the trans replaced, it went into what I believe
is a safety mode- only 1 or 2 gears would operate. (it had run fine
with no problems for 240K miles) However after having put in a new
unit, the same thing happened. Have now sent it back to the
transmission shop 6 times. Each time they would return it, after
driving about 150 miles, the same thing happened. The shop claims
there is a short in the wiring somewhere and a fuse is blowing, but as
of now, they have been unable to find the problem. Any other ideas?
Answer: Yes, this does sound like a blown fuse. It most likely is one
that sends power down to the transmission to feed the internal shift
solenoids. You may also have codes stored in the computer- with or
without a check engine light. Most of the large national parts store
chains will scan the computer for free. Codes for shift solenoids may
be stored. When there is a loss of power feed to the trans, it does go
into a default shift mode.
Check all the fuses in the dash fuse box and the underhood fuse box-
if it has one. Replace any blown fuses. Now to find out where the
short is can get pretty involved. There are a few placed that are
common.
1. The large wiring harness that goes over and near the power brake
booster in the drivers side firewall under the hood.
2. Following that harness to the back side of the engine as it starts to
go down to the transmission connector.
3. The ignition switch wiring harness under the dash that runs down
the steering column and into the firewall.
4. Or anywhere in between these locations.
Best way to find it is to install a circuit in place of the blown fuse, turn
the key on- engine off, and pull on these harness locations while
listening for the circuit breaker to pop. That will tell you where the
short is. Then you would need to get into the wiring harness at that
location and check each wire for being rubbed through on something
metal. It will most likely be a pink wire.
If you do not have a circuit breaker, then installing a good fuse and
doing the same. Have someone get close to the fuse while you are
doing this and listen for the fuse to pop.
that sends power down to the transmission to feed the internal shift
solenoids. You may also have codes stored in the computer- with or
without a check engine light. Most of the large national parts store
chains will scan the computer for free. Codes for shift solenoids may
be stored. When there is a loss of power feed to the trans, it does go
into a default shift mode.
Check all the fuses in the dash fuse box and the underhood fuse box-
if it has one. Replace any blown fuses. Now to find out where the
short is can get pretty involved. There are a few placed that are
common.
1. The large wiring harness that goes over and near the power brake
booster in the drivers side firewall under the hood.
2. Following that harness to the back side of the engine as it starts to
go down to the transmission connector.
3. The ignition switch wiring harness under the dash that runs down
the steering column and into the firewall.
4. Or anywhere in between these locations.
Best way to find it is to install a circuit in place of the blown fuse, turn
the key on- engine off, and pull on these harness locations while
listening for the circuit breaker to pop. That will tell you where the
short is. Then you would need to get into the wiring harness at that
location and check each wire for being rubbed through on something
metal. It will most likely be a pink wire.
If you do not have a circuit breaker, then installing a good fuse and
doing the same. Have someone get close to the fuse while you are
doing this and listen for the fuse to pop.
2000 chevy blaze 4.3 L Vortec V6.
Question = When I turn my truck on or put it in gear the reverse lights are on even in drive...How do I fix this so
they only come on when I am in reverse????
Question = When I turn my truck on or put it in gear the reverse lights are on even in drive...How do I fix this so
they only come on when I am in reverse????
Answer: You probably have something faulty or shorted inside the
neutral safety switch. Also called the 'park/neutral switch', it is located
on the side of the transmission. A quick look underneath and you could
see if there is any obvious problem like wiring rubbed through or
shorted. If not, I'd replace the switch. The connectors are glued in from
the factory, so if you've never had them or the switch replaced before,
I'd recommend getting new pigtail connectors along with the switch and
wire them in per the directions
neutral safety switch. Also called the 'park/neutral switch', it is located
on the side of the transmission. A quick look underneath and you could
see if there is any obvious problem like wiring rubbed through or
shorted. If not, I'd replace the switch. The connectors are glued in from
the factory, so if you've never had them or the switch replaced before,
I'd recommend getting new pigtail connectors along with the switch and
wire them in per the directions
