[1_bad_04HD]

Not sure if this is the right section or not but I don't have time to worry about it. Anyway this morning I went out and got in my truck (2004 2500HD 6.0L), well when I started it up my check engine light was on. At the time I thought nothing of it, sometimes it tends to come and go. No biggie. Well this time it stayed on all day. I had to go into town anyway, so I figured I would stop at advanced auto and get them to put the computer to it and see what codes it was throwing. To start off with, it was saying a bad wheel speed sensor. Then, 10 more random codes popped up throughout the truck. Wheel speed sensor, misfiring, transfercase not functioning, etc etc. Well then he said the ECM was "malfunctioning". He looked at me with a confused face and asked how many miles was on my truck. I told him it just rolled 100k not too long ago. He then looked even more confused and said that there's no way my ecm should be going out this early. He also said that since everything else was functioning properly that it could be the ecm throwing everything else off, resulting in the 11 random codes. Reason I was so concerned is that I'm driving down to the beach tomorrow and didn't want it to break down while I was gone. So, my question is, what is going on? Could it be going bad? Could it just be a short somewhere? Could they're computers at advanced just be shitty and I need to take my truck to a shop? I need help asap. Thanks guys.

 

[blair08sierra]

Did he clear the codes? If so, did they come back on? Is the truck driving as usual?

 

[1_bad_04HD]

I believe he did and they came back. As far as the truck, it's driving like normal. Nothing unusual going on...

 

[1_bad_04HD]

So I'm down at the beach, and I go out to my truck and I hit the unlock button on my remote. It does nothing so I thought my battery in my remote was dead again. Wrong. I opened it with the key and tried to crank it and nothing came on. My battery was as dead as dead can get. Nothing was left on, no radio, no lights, nothing. I always make sure to cut everything off when I get out. When I tried to start it nothing would happen, no radio would come on, no lights, and it wouldn't do anything when I tried to turn it over. I'm so confused.

 

[ibanender]

So I'm down at the beach, and I go out to my truck and I hit the unlock button on my remote. It does nothing so I thought my battery in my remote was dead again. Wrong. I opened it with the key and tried to crank it and nothing came on. My battery was as dead as dead can get. Nothing was left on, no radio, no lights, nothing. I always make sure to cut everything off when I get out. When I tried to start it nothing would happen, no radio would come on, no lights, and it wouldn't do anything when I tried to turn it over. I'm so confused.

A bad battery would cause all of those errors, and make it so nothing works. Did anybody bother to check the battery or alternator?

 

[1_bad_04HD]

Not yet. I've tried to get up with a guy I know that does mechanic work but can't get up with him. I know I can do it myself but I honestly haven't had time,

 

[1_bad_04HD]

So I found my test light and started testing things under the hood. Battery is fine, alternator is fine. Started pulling fuses and testing. ECM, and PCM are not causing it. Pulled the radio fuse, DRL's, parking light, and a few other fuses and they were not the problem either...anything else I should try before taking it somewhere? I'm not the most experienced with electronic problems so if I'm missing something please tell me.

 

[ibanender]

So I found my test light and started testing things under the hood. Battery is fine, alternator is fine. Started pulling fuses and testing. ECM, and PCM are not causing it. Pulled the radio fuse, DRL's, parking light, and a few other fuses and they were not the problem either...anything else I should try before taking it somewhere? I'm not the most experienced with electronic problems so if I'm missing something please tell me.

A test light will not tell you if a battery or alternator are fine. How did you test those?

 

[1_bad_04HD]

I guess you're right. I was in a hurry when I wrote that. What I meant was that I figured out I had a draw coming from somewhere, and it wasn't any of those things. I'm not good with wording things sometimes so maybe that will make sense

 

[ItsSabby]

If the alternator shorts out internally it could draw power and kill the battery, but still work to charge it.

 

[ibanender]

If the alternator shorts out internally it could draw power and kill the battery, but still work to charge it.

Yup, I've seen it before. Do you have a current clamp? That should tell you a lot.

 

[1_bad_04HD]

No...so you guys are leaning more towards it being the alternator?

 

[ibanender]

No...so you guys are leaning more towards it being the alternator?

Or battery. What does the battery rest at?