Dead battery & now truck runs funny

[txab]

Everybody lighten up a bit. This is the internet. Not everyone has time to write so that everyone feels warm and snuggly about answers. Sometime they can be blunt and to the point without any ill intention

[schalid]

The Haynes manual gives a faster solution tto the learning again. You disconnect battery for 10-15 mins. Then hook up and start truck and let idle until it gets up to normal operating temp. Then give it some gas so that it hits 1200 rpm for 2 mins. Then drive truck with varied speeds for 5 mins. I had the same thing when my battery is unhooked in my 03 sierra 5.3.

[schalid]

Mine was throwing all kinds of codes too. ABS, random misfire, 4X4, etc.

[gshock00]

Ok I wanted to give an update tried to do it sooner but the site wouldn't let me on. Took it to two different places before going to a guy who cost more. I had some parts replaced on my tranny but code was still showing so he gave up. The next place disconnected the battery and let it set then started it up and it ran fine "which it did that for me everytime" but then when i came to pick it up was back into limp mode. They played with the electrical and don't know what they did but my vents no longer worked the air would only come out on the floor no matter which mode it was in. Got it away from them as soon as i could. Then I took it to the expensive guy. He went in fixed that problem, found out why my right side lights weren't working, got my vents to all work properly, got my truck to stop showing codes that were not the problem and got it to where my truck actual ran fine. It turned out that the audio place who did my stereo and remote start a long time ago didn't correctly wire either one of them right and they somehow melted into eachother and also got into my wiring for my lights and which is why i lost the right rear lights.

[zach1990]

Holy cow! Its amazing how something like that can mess up so much stuff. Glad you got it fixed

 

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[Snow White]

ironically, my first truck i bought had a blown motor and a dent in it we knew that much. what we didn't know is that some %$$#^ put a wire around a fuse to bypass it so the stereo would work... so when we went to hook up the battery and start tracing wires for the fuel injection we were adding to this 84 2.8L from an 86 camaro top end... all kinds of strange things were happening and wouldn't you know, i started yanking fuses and saw the jumper... then looked way under the dash with a mirror.... then i pulled the stereo out and the entire harness was melted down to bare wire all of it.

 

 

we didn't know we bought that too....

 

because adding the fuel injection wasn't hard enough, replacing the harness just topped it off.