Weird electrical problem
CF Beginner
Joined: Apr 2011
Posts: 4
Likes: 1
Hey All,
This is my first post here, hopefully future posts will be for solutions instead of problems.
I have a 2002 Silverado 2500 HD with 6.0L gas engine, it only has about 98,000 miles. Recently, it's started doing two things and I don't know if they are related:
1) Threw a P0322 code. This one is pretty straight-forward and the truck does the rough-idle and other things that are called out in the OBD forums. I am planning to replace the knock sensors as advised.
2) This is the weird part:
* Sometimes when I'm driving, the computer resets several times in a row; that is, the radio turns off then on again, the gauges all go to zero then back to correct reading, ABS and brake lights flash, etc. as though I just turned the key on.
* In addition, although this has only happened at idle, sometimes the truck will DIE on the spot and cannot be started again. When this happens, the truck is *completely* dead electrically - door locks don't work, no dome lamp; it's like no battery is installed. I'm not sure what happens, but at some point (usually about 10 minutes or so) it just works again, like nothing was ever wrong.
Is the ECM a goner? What could cause this?
EDIT: More oddity - when the truck is running with no electrical issue, it shows a "check engine". After the truck resets, dies and comes back, check engine is OFF, but it runs WORSE. After a while (a few miles) it will improve and then Check Engine comes back on. Really.
Thanks,
This is my first post here, hopefully future posts will be for solutions instead of problems.
I have a 2002 Silverado 2500 HD with 6.0L gas engine, it only has about 98,000 miles. Recently, it's started doing two things and I don't know if they are related:
1) Threw a P0322 code. This one is pretty straight-forward and the truck does the rough-idle and other things that are called out in the OBD forums. I am planning to replace the knock sensors as advised.
2) This is the weird part:
* Sometimes when I'm driving, the computer resets several times in a row; that is, the radio turns off then on again, the gauges all go to zero then back to correct reading, ABS and brake lights flash, etc. as though I just turned the key on.
* In addition, although this has only happened at idle, sometimes the truck will DIE on the spot and cannot be started again. When this happens, the truck is *completely* dead electrically - door locks don't work, no dome lamp; it's like no battery is installed. I'm not sure what happens, but at some point (usually about 10 minutes or so) it just works again, like nothing was ever wrong.
Is the ECM a goner? What could cause this?
EDIT: More oddity - when the truck is running with no electrical issue, it shows a "check engine". After the truck resets, dies and comes back, check engine is OFF, but it runs WORSE. After a while (a few miles) it will improve and then Check Engine comes back on. Really.
Thanks,
Do it and you will see it.
Everything it will be perfect.
CF Beginner
Joined: Nov 2012
Posts: 2
Likes: 0
Mine did the same thing. It my batt. Alt. Everything tested good ended up being bad ground wires they all looked good and were tight I got lucky was doing them one by one till I found out what one was bad started with the one from batt. And it ended up beong that one.
CF Beginner
Joined: Feb 2013
Posts: 4
Likes: 0
From: Shelby nc
1980 silverado 4x4 350
i have had battery drain issues and have traced down to the ac and heater blower! i can unplug and leave overnight and its fine. i can leave connected and the battery is dead in am. new blower motor and new blower cut out relay! when i have the truck running and blower connected the speed control switch works ! when i cut ignition switch off blower goes off! HELP PLEASE
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