Jump to content

Recall - Vacuum Pump May Decrease Power Brake Assist

Retired Bob
 Share

Recommended Posts

Darkwolf7 Enthusiast

Darkwolf7

Posted
Posted

12696313 outwardly appears the same as 12669488. Maybe GM changed something internal. I do not know. I installed this part last night on my truck and braking is better now. But I still had the original faulty part from the 2014 model. 

  • Replies 206
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

camcamaro1991
camcamaro1991

As a former discount tire employee (days of 5 were hired and only 3 could keep their job, today auditions are gone), started back in the firestone/ford recall days, and later becoming a MB Master tech

jay webb
jay webb

ok the special coverage is for a faulty vacuum pump which is a mechanical pump attached to the engine. this is not a  recall. the recall is a reprogram of the EBCM software. two separate things. now i

Mike GMC
Mike GMC

So now we need an extended warranty on the ABS unit to cover premature wear from using it in normal braking?  Seems like yet another band aide to me.  That Corvette electric pump is looking better and

Posted Images

aaronarf Enthusiast

aaronarf

Posted
Posted
55 minutes ago, Darkwolf7 said:

12696313 outwardly appears the same as 12669488. Maybe GM changed something internal. I do not know. I installed this part last night on my truck and braking is better now. But I still had the original faulty part from the 2014 model. 

Interesting, thanks for taking the time to post the info.  Same manufacturer too.  I'm just hoping that GM makes things right, really a serious safety issue.  And a massive expense for those unable to do the repair themselves and don't fall within the constraints of the TSB

Darkwolf7 Enthusiast

Darkwolf7

Posted
Posted

Yes. And all the old pumps will fail. Quote was almost $700 to fix. And if you have over the 70000 miles you will be paying. Mine started to fail around the 90000 mile mark. 

aaronarf Enthusiast

aaronarf

Posted
Posted
1 hour ago, Darkwolf7 said:

Yes. And all the old pumps will fail. Quote was almost $700 to fix. And if you have over the 70000 miles you will be paying. Mine started to fail around the 90000 mile mark. 

75kish mine really started to give out.  Changed at 78500. 

ksiesel Enthusiast

ksiesel

Posted
Posted
1 hour ago, ndrmills said:

Curious how they think a software fix will fix a failing mechanical pump..???? Sounds a bit like a hoax...….

Don't think it will fix the root cause, but should help to avoid low speed accidents by allowing the ABS modulator to kick in sooner and provide more braking with the same pedal force when vacuum is too low.  At least that's what I think this recall SW is doing.

RE1 Enthusiast

RE1

Posted
Posted (edited)

Gotta love GM (sarcasm).

 

These pumps should be replaced with a recall. 

 

97k and just waiting for the next major mechanical failure....

Edited by RE1
Slvijoe Enthusiast

Slvijoe

Posted
Posted

After having the reprogramming done on my 17 Silverado, I do feel that my brakes feel much better. 

Whatever they did it makes a difference. 

?

aaronarf Enthusiast

aaronarf

Posted
Posted
On 9/24/2019 at 7:03 PM, Slvijoe said:

After having the reprogramming done on my 17 Silverado, I do feel that my brakes feel much better. 

Whatever they did it makes a difference. 

?

Do you know if they checked the vac pressure?  Only way it should feel different is if the pump is on the way out... 

parrysands New Member

parrysands

Posted
Posted

Anyone have battery problems after the update for the recall?  I took my 2016 Silverado in last Friday to have the Recall and a Radio Software update done.  Up until that point, I had never had a single issue with the battery or starting.  Over the weekend, the whole thing went to crap.  The radio keeps blinking in and out, and the truck won't start unless it is jumped.  I stopped at 3 Parts Places and had the battery tested, and all 3 said it tested OK, but needed charged.  I had also left it overnight on a 2 Amp Trickle Charge and this morning it still wouldn't start.  

 

If anyone has any ideas, please let me know.

 

Parry

  • 3 weeks later...
Sylvia Taylor New Member

Sylvia Taylor

Posted
Posted

So I had the reprogramming done on my 2017 Suburban on 9/21/2019 and had an incident happen last week where I was in a drive thru and applying pressure to the brake pedal the vehicle was still not stopping.  There was a vibration in the pedal and a noise noted as I had the window open.  I was able to get the vehicle out of the drive thru and to an open parking lot.  I turned the vehicle off and back on and that seem to fix the problem.  Took to the dealership and they claimed they had never seen this before.  No error codes and could not be reproduced.

 

So....bottom line.....the fix that GM issued did NOT fix the problem.  What a waste of time for everyone plus the safety issues that result for the driver, passengers and everyone else.

NomadicCPO Enthusiast

NomadicCPO

Posted
Posted
On 9/17/2019 at 1:05 PM, 15 Z71 said:

My vacuum pump ticks like an old model "A" running. My breaks work fine but hate how it sounds. My friends 2018 is super quiet. You cant even hear his running next to mine. Any chance they would replace pump?

Had mine replaced with new style pump.  Unfortunately it still makes the same tick occasionally, though not quite as frequently.

David Crandall Enthusiast

David Crandall

Posted
Posted

Special coverage on this pump has been updated!!! 10 years 150,000 miles.

#N182202780-01: Special Coverage - Brake Assist Decreased Due to Vacuum Loss - (Oct 11, 2019)

 

Release Date: October 2019

Revision: 01

Revision Description: This bulletin is being revised to update the models and extend the coverage period. Please discard all previous copies of bulletin N182202780

 

What We Have Done:General Motors is providing you with the additional special coverage outlined in this letter for the condition described above in the interests of customer satisfaction. If this condition occurs on your 2014 – 2018 model year GM vehicle within 10 years of the date your vehicle was originally placed in service or 150,000 miles (240,000 km), whichever occurs first, the condition will be repaired for you at no charge. Diagnosis or repair for conditions other than the condition described above is not covered under this special coverage program. If you were previously notified regarding this condition, please note that we have expanded the coverage.

Reimbursement:If you have already paid for repairs for the condition described in this letter, please complete the enclosed reimbursement form and present it to your dealer with all required documents. Working with your dealer will expedite your request, however, if this is not convenient, you may mail the completed reimbursement form and all required documents to Reimbursement Department, PO Box 33170, Detroit, MI 48232-5170. The completed form and required documents must be presented to your dealer or received by the Reimbursement Department by November 30, 2020, unless state law specifies a longer reimbursement period.

  • Like 1
David Crandall Enthusiast

David Crandall

Posted
Posted

There is a recall to reprogram the abs module:

"Dealers will reprogram the electronic brake control module with a new calibration that will improve how the system utilizes the hydraulic brake boost assist function when vacuum assist is depleted."

There is also a special warranty coverage on the mechanical vacuum pump for the brake booster, 10 years 150,000 miles

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Gkistler
      2015 Sierra Denali L86 cyl 5 misfire at idle

      By Gkistler · Posted

      Hi friends - first time poster. I have a 2015 sierra Denali with 150k miles, I’m the second owner and she’s given me 75k of great service. I run a pulse AFM disable device. Starting Thursday when I exited the freeway after a short local ride it started idling rough, with an obvious misfire shake and was down on low end power.  I got it home and hooked it up to my scannner and found no codes but in live data a pretty bad misfire on cylinder 5. I replaced the coil, plug and wire with all new OE replacements (Delphi gn10165 coil, acdelco wire and 41-168 plug). It’s still behaving the same way after firing the parts cannon at it.   I know cyl 5 is a non AFM cylinder so I am not thinking this is AFM related but I’m kinda at a loss. injector? Bent pushrod? It’s running too well over 1k rpm to suggest those IMO. Has anyone chase this issue before and what was it? Any suggestions? 
    • zibzer2
      Pulsating Noise 4Cyl Mode

      By zibzer2 · Posted

      2017 Silverado L83 5.3l 6speed transmission Hello, not a new member but havent posted in a while and my old signup info isnt working so had to create a new account. anyways, I have an issue with my truck and hope someone can spread some light on whats happening: -when it goes to 4cyl mode it makes a clunk sound (but not when coasting or going downhill) -when in 4 cyl mode and under load it makes a load pulsating sound (not a tick). -goes away completely when in M5 gear or when plugging in an AFM delete. Im guessing it is one of 2 things but im not convinced of either to be honest. 1. lifter stuck in v8 mode 2. torque converter shudder realistically it doesn't seem like the TC as there is no physical vibration , and it never happens in v8 mode. but maybe? and wouldnt a lifter make a sound whether with load or not? any ideas let me know please. thank you!  
    • Chuck FB
      Some Assembly is Required

      By Chuck FB · Posted

      Which has made me wonder with the various engine failures of a few brands in the last few years, is it sub par materials such as lifters etc causing failures, or bearing clearances on the crank etc or perhaps bad designing of an engine physically or causing too much load on the components due to the hp/torque they can push out of them. Or is the oil viscosity and additive package of current oils or a lack of oil flow by an oil pump not able to supply sufficient oil at idle or under high load at low rpm. Or is it every item I listed that combined together has pushed the limits so far to the left that there is hardly a margin of safety left and add in some fuel dilution and too long of an OCI and premature engine failure is the result ?. 
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      He is not saying that an SAE *W20 will have more viscosity than a *W40 due to MORE VII polymers. He is saying that although multiple *W40 may post in the PDS the same or similar 100 C and 150 C viscosities that the blenders choice of modifier TYPE and AMOUNT to get his chosen base to grade will not give identical real world viscosities in shear and at temperature. All will pass the SII test but not all will pass the 100 C HTHS (unpublished value) testing the blender does and relies on to get the required by law "percentage improvement' referenced to his last great work.    Tis the problem with the lie. Once told others are required to support it. 
    • PunchT37
      Parking Brake - Automatic Engagement Questions

      By PunchT37 · Posted

      I have a `25, 1500 that auto sets on incline. Never knew that at first. I have the electronic shifter. Just think if it didn`t do that? Unlike a mechanical shift that you can muscle out of park, how would you get this thing out? That would be a problem.   What I found out later is, I don`t have to push the button to release. Just put it in gear.   Setting parameters? Don`t know if it`s possible.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...