Many people have experienced only slightly reduced braking performance. Some have incorrectly assumed everyone else's braking performance has decreased only slightly. They seem to ignore the varying severity, and make faulty assumptions that each vehicle will stop reasonably with a little more pressure on the brake pedal, like theirs. Based on that ignorance, they assume everyone is whining about the same minor braking issues they have experienced.

Hopefully the vacuum pump is finally approaching availability, which is the right fix to correct the problem. However, if you have no brakes long after the required vacuum has accumulated, your vehicle has either one hell of a vacuum leak or a completely different problem.

 

I take this comment to be HIS opinion not GMs.

The issue on this and many other threads on the forum is Start Up Brake Issue.

If you are having a brake fade problem long after the warm up time, then even a vacuum pump isn't going to fix this. I am curious about your issue so can you explain exactly what your brakes do or don't do? The more details the better.

 

Well you come in here with only a couple post and get mad if no one responed to your post. Then you get mad if we don't say the things you want to hear. Not a good way to make friends.

I appologise if I missed it somewhere but I did not understand or see that you did not have vaccum long after start up. If that is the case this is not the same problem the rest have.

I know very well what no brakes feels like. Your just missing vac. try it with a broken line and driving one in on the E brake!

The reprogram you have had done will not fix it as we have many post attesting to that. That is why the vac pump was the next fix GM is bringing out.

Sorry if I don't tell you things you can take to court. I am very lucky to not have the issue that many have. It also sounds as if you have a different problem as no one here has presented a bad pedal long after start up.

If your here for help there are a lot of people here that will be glad to offfer what they know. If your here to build a court case good luck!

Have you or are you going to ask for the vac pump fix? This very well could solve all your problems.

FYI Some Solstice have also had the same problems. Yours is like my SS one that has not had the issue.

 

Well put. I asked about the intention earlier.

 

I had my car at the dealership today and the mechanic was able to reporduce the issue.

I got a call later and they told me that there is a cam in the vacuum pump that ends up in the wrong position and needs to be fitted with new parts to fix this....

I will post in a few days once the parts are in - to see if this is indeed the issue.

to add insult to injury when I was backing out of the garage to take it to the dealership... after not using the car for a few weeks, I ended up hitting the passenger mirror on the side of the house. :-( that will be a quick $328 to replace the whole assembly and paint it. ugh...

Mike

 

Thanks for the heads up!

Don't feel bad on the mirror. I just put one on my moms car. My mom just cleared off the passenger mirror on here new Malibu on the garage door. At least it only hurt the mirror.

 

Thanks for the update. If it does turn out to be the fix, see if you can snag a part number(s) or reference, so that I can approach my dealer (who replicated the problem last week) with a request for that as well.

The mirror a result of the brakes and not being able to stop in time to avoid the rub? Bad luck either way....

 

Yes any info from your invoice would be a big help to many here as a point of referance to explain what they need to have repaired.

a the part# or related info would be great.

 

I did get interesting results this morning. I had called the dealer about going down the TAC route to get the fix. My Auto SS was really bad with the no breaks on a cold start. I had the program update and not really any difference. Infact I had found that in the cold weather it only took about 3 hours for the breaks to vanish. So after my conversation with the dealer he say that it had to fall into guidelines for the fix. So being an engineer I had to retest to make sure. As I always warm the car up because it was so bad and I hadn't experienced it in a while. But over christmas I had the stage upgrade done. Well this morning after 10 hours of sitting. I started it up and immediatly moved the car and the breaks were not bad at all. It was really good I'd say about 90% and it took an effort to get the ABS kicking on feeling. I going to try again the next few mornings but has anyone else experienced this? After this mornings experiment I don't feel like I will pass whatever guidelines they have. I hope this is another plus for having the upgrade done which is very sweeeeet.

 

Mr. Redface,

That is interesting. Is there anyone else out there that have done the upgrade and noticed a difference in their brakes at startup?