Keep me posted on how everything is going with your vehicle once you pick it up, joezombies. If there are continuing problems I'm happy to look into this further with you. The best way to contact me would probably be a private message as sometimes I lose track of different threads over time.

All the best,
Sarah
GM Customer Service

 

I really appreciate it and I definitely will.

 

well i picked up my car today and drove it maybe a block and it still isn't boosting over 5 psi and still doesn't run anything like it used to before it got hot out. I took it back to the dealership and they said the technican said it ran fine. i wonder if he even knows how these are supposed to run/drive/ accelerate, compared to a normal cobalt? waiting to hear an update hopefully monday. the service manager said something about possibly refunding the money i payed and starting over. Back in my dads day when he worked at a chevrolet dealership he said if they put on a part and it didn't fix the problem they'd take it back off and not charge for the labor that went into installing it, and in some cases if it was too much work to take it back out would leave it in and call it a loss and move on to something else to try to fix it. I don't see how i should pay for someone else to learn how to work on my car and just run through parts until they might by accident fix it down the road. so now its probably gonna be another week without my car and more money i don't have.

 

Any updates on the issue? Has replacing the airbox fixed the gauges bottoming out and loss of power steering? I have the same issue, gauges drop off, lose power steering, shifts hard, loss of power. However I have a 07 Lt, with an injen intake. So I would have to look at that for solutions.

 

All the guages and eps module(power steering) are fed from the BCM,if you have time pull out the bcm remove the connectors and spray them with some contact cleaner also inspect the pin for any discoloration.

you could also inspect the backs of the connectors to make sure the wiring is crimped properly in the pins(a slight tug could be in order here but be careful not to break the wires or pull them out)
Trying to remeber which wire but concentrate on the pink wires.

Another thing the crank/Run relay(this is tied to the ignition) in the fuse box under the hood feeds those circuts so maybe pull it out inspect it and put it in and out a couple of time to make sure all the pin are making good contact.
might not help but wont cost you anything!


Just looking at the prints
on the BCM Light Grey connector(C4) pins F5 and F9 they both have two pink wires going to them and that could be the issue.(bad crimp on the pin)
F9-pink wire goes to Eps(power steering)
2nd -pink wire goes to the air bag module in the steering wheel then to steering wheel control left(Im thinking the buttons but not sure) (this Could be the turning senario if theres something wrong with the air bag clock spring)

F5-1st pink goes to feed power to the instrument panel(gauges)
2nd pink goes to the air bag off/on indicator.

 

thanks for the help, ill have to check this out when i get a chance its been around 111 degrees here lately and i work nights so when i get off its around this time.

 

Well here's an update. i picked up my car after they told me to just come get it cause they had no clue. all the work they did was replace the power steering module and ignition lock mechanism ( supposedly) i have no way of knowing for certain. that was under recall. then they told me i had no warranty its an 09 with now 24,000 miles. they charged me $65 an hour to diagnose and replaced the air box, which did nothing but give the oil breather line from the valve cover somewhere to go because the original one had broken off of the air box. in addition to that they took off my waste gate actuator solenoid or whatever and said that it was fine and put it back on which also fixed nothing. i picked up my car and on the way home the gauges went dead and all the usual stuff continued as it did when i had dropped the car off including not boosting over 5psi and kicking codes for miss fires, under boost, and p0101 code for mass airflow. the A/C went out once again just like it always has when the gauges went dead so i burned up on the way home. I stopped at a gas station on the highway to get a drink and wouldn't you know, the car would not start back up. and only started back up after sitting between 10-15 minutes. so basically i payed a dealership $260 and some change to do nothing more than replace a plastic air box that would have taken me 5 minutes to do. One thing i have noticed was that this car under the hood gets extremely hot i don't know if this is normal or not as i do not recall any other vehicle i've ever owned getting that hot even when i beat the **** out of them on a hot day.

 

Just to let you know the prints I have are for a 06 LSJ but should be close to the same!

 

I appreciate it, I am gonna take a look at the BCM later and clean the connections. Joezombies that is why I haven't taken mine to the dealership nothing but highway robbery.

 

To be fair to the dealer techs intermitten problems are the worst to figure out until something out right fails.
All you can do is go through every conceivable cause and in alot of cases it involves changing out parts.
The other thing is someone has to figure it out first and add it to the data base of problems and solutions that GM keeps, they call them TSB's.This way it can be fixed in a cheap and timely fashion.
Another thing is the electronics run on only 12vdc and some circuts less (5vdc) and any bad or loose fitting connection can play havoc with the systems.

I would like to see a sticky of problems and know fixes or solutions started where the moderators can post thing
Members have found or figured out in a organized manner.
How about starting a poll?

 

Just finished taking out the BCM and cleaning all the connections and applying some diaelectric grease.
Car started fine, actually heard the compressor kick on when I started the A/C, no check engine light, no anti theft light, gauges all worked, and as of late it was rare for my car to have any of those things working.
May have fixed the problem only time will tell for sure. Thanks for help.

 

i get what your saying, but the gauges thing and underboost was a conatant thing, not like it would come and go from time to time. it was everytime i started my car. My main Bitch is that i am paying money for someone to work on my car and be a GM technician and work on a GM car so they should have an idea of things. not like i took it to a toyota or ford dealership! If you do something to my car such as replace a part and that does not fix the problem then im sorry but that should not be my loss as a customer. I'm paying you to fix my car so if it doesnt fix it then don't charge me. I used to have a cavalier and was having electrical problems and took it in and payed them to diagnose it. they traced it to a couple frayed wires on the main harness that were easilly accessable. they wanted to charge me $4,000 to replace the entire harness. i took it home and soldered the wires and put shrink tubing on them and taped it back up and problem solved. took me 30 minutes. But honestly to call me up and tell me my car is fixed and running like new so icome pick it up and it is doing exactly what it did when i gave it to them is rediculous! especially when it was a 45 minute one way drive there!

 

Yea sounds like an unfortunate situation. I am out in South Dakota, and there was no way I was driving all the way to the dealership to blow money out the window after the tech had told me on the phone they had never heard of my problem.

 

Did you figure out if it was a short or not my cobalt started with the power steering issue last night. I read your post and I recently changed the wiring harness for the ac I used one from a junk yard do you think that might be a cause?

 

I have the same exact problem, took it to the dealership 10/11 and they greased up the connections and it was fine...for a while, it just started acting up on me again and when i called the chevy dealer i was on hold for a while until a guy took my name and number and said someone would call back...no one called me back, so i guess i gotta be an a-hole tomorrow with them

 

Greased up what's connections?
Specifically the motor ?

 

Reset the computar? unplug the battery.. etc.. it's not yer fuses, or the cluster.. this guy came by Autozone the other day (while I was still workin there..) an had the same thing happinin with his 2007(08?) Envoy.. couple thousand dollars later, he had to get a new ECM, and it fixed everything..

 

Good morning,
I'm sorry that you've had some problems communicating with your dealership. As always, I'm available to help if you should need anything. Send me a private message with more information (the last 8 of your VIN and contact information, name of your dealership, etc).
Sarah, GM Customer Service

 

I had a problem with my gauge cluster in my 07! took to the dealership 3x and they couldnt figure it out. I told em it had to be the whole instrument cluster and they replaced it and it never happened agian!

 

I'm also having the same problem, no power sterring, all gauges die, it goes into limp mode-security mode, and I get a clicking coming from the auto shifter. I have a base 2007 ls and have had the recall already done 2 years ago. also if I try to shut it off and restart it to reset everything sometimes it won't start, won't even make a sound, yet I have full battery? I have heard it could be another bad power steering motor, a bad bcm or a bad power steering control module. Has anyone actually had this problem and got it fixed?

 

Have you thought about the ignition switch being bad?

 

...this is what happens to my car, very random, happened 5 times so far in 2013, and it gave me this code. u0073 ..thoughts?

 

U0073 DTC: Control Module Communication Bus "A" Off
Maybe the bcm going out not sure I had similar problems and tracked it down to a clogged cat causing multiple cel codes and overheating causing other problems. I have a spare bcm I bought laying around.

 

Confirmed. My cruise control has an effect on the code. 90 percent of the time when i use cruise, the U0073 code triggers. sometimes within 10 minutes, other times with in 2 hours. Ideas?