Went to jump battery then went haywire, won't start.

Asked by shyloh Dec 18, 2019 at 01:48 AM about the 2002 Chevrolet Avalanche 1500 4WD

Question type: General

I took keys out wrong and by next day
car wouldn't start. I have a Stanley
jumper so I tried that but it wasn't
charged so it almost started but
needed more juice. Took jumper inside
and it started to snow. I charged up
jumper and went to jump truck. Then
different noises in car on dash. And
yes mine does have the engine light
after awhile started coming up. What
does that mean? Please don't tell me I
blew the ACU? I think what I did was
the clasps on the jumper have no
rubber on them and I was taking them
on and off the terminals trying to get a
good latch on them. I noticed my
positive clasp that was on the terminal
was or had been touching the metal on
the truck and wet because of the
snow. I grounded the positive and blew
a circut but can't find any blown fuses.
After the first try it should've started
but went all haywire. But like a fool I
kept trying and trying. The door
dinging wouldn't stop forever. I took
keys out and I could hear something in
the upper front of engine making a
weird sound for a little bit then
stopped. I don't know what to do. I had
very important stuff to do yesterday
and if I don't get it done my house will
fall in. Engine light came on after I
kept trying. But makes weird sounds
inside truck, dash weird says I'm in
neutral, ya know cuz of computer. I
pray I didn't cause major dammage.
Please help.


3 Answers

26,865

The fix is probably beyond your skill level. I suggest you take it to a reliable shop and let them go through the electronics and power systems. In the mean time, rent or borrow a vehicle to dispense with your important stuff.

1 people found this helpful.

Wow how would you know what my skill level is. Basically I'm asking did the computer blow or is there a fuse link i should check? Maybe something i missed or how to check if its the computer or not. I move to a tiny Town in the middle of nowhere and the shop can't even look at my truck untill February, so leaving it with them is not an option. If I know for sure it's the computer I'll just buy one put it in and program it myself. Any Helpful Answers would be appreciated.

18,715

Not knowing how to check if it is the computer or not is where the skill level comes in. What did it tell you when you scanned it for trouble codes? You can buy replacement ECUs online. I believe they are plug and play with no programming needed, although I'm no expert on this... perhaps you are. Simply replacing parts without proper diagnostics is rarely successful though and serves only to frustrate you and drain your bank account. I'm inclined to agree with Taver, and if that means sitting on the waiting list till Feb. then I'd suggest getting on that list ASAP.

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