Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Ill give it a shot
Did you look at the connector for the trans? They sometimes chaffe while rubbing against the trans.
Im Chris by the way.
Put that thing up in the air and look at the connector.
Check for chaffing and pins pulling out.
This is a common place they get damaged on the side of the trans.
this is an example of pins pulled out.
Let me know.
Did I lose you?
Did you check the wires by the side of the trans for chaffing?
What bothers me is that you can communicate at times. Its not constant. There has to be a wiring issue here.
give me a minute.
The connector at trans is round right?
left fron frame rail is another common rubbing point. Rubs against brake line.
Also look under dash wiggle all wire harnesses to side fuse box and by break pedal they have at least to different places where rubbing has occured.
have you seen this bulletin?
yes but where are they damaged?
Look at that bulletin it can be anywhere.
it can be a loss of power or ground also
Somewhere in the harness.
I hear you.
What bothers me is that its intermittent
Usually when a module goes bad its bad.
can you do a complete system scan? What kind of scanner do you have?
if you scan it right now tell me the codes
it wont scan complete car?
ok gimme a minute
let me check those meanwhile scan tcm.
can i get the eigth digit of the vin?
so basically you can communicate only with ecm.
it does start though correct
So youre a professional? I would start by diagnosing U0073.
Do you have alldata or mitchell?
ok if its ok with you I will opt out because I get up in 6 hours. I cant help you till tomorrow night. If you want I can go through the checks with you then, or i can opt out so you can get help in the daytime. Let me know.
ok no problem I will opt out so you can do so. Good luck!
I'm sorry you are having problems with your vehicle. I will try to help.I'm a full time mechanic and have been a mechanic for over 20 yrs and I work part-time here on JustAnswer to help you and others repair their own vehicles, and I get credited by your ratings.. So before leaving the site make sure and leave me a rating. You can still reply to me as many times as neeed, even after the rating.. I will need for you to be my hands and eyes since I'm not there.
ok I will give it a stab. I just read your replys. So start by unplugging modules and as you do rescan the pickup. When the other modules are readable start plugging the rest in but leave the one unplugged and see if they will all be readable with that one unplugged. let me know what you find. Thanks Sonny
just for kicks try unplugging the ecm and then scanning the rest of the systems.