Jump to content

Recommended Posts

Posted
41 minutes ago, ShamrockShooter said:

My invoice says they measured the vacuum pump at 3 where it was supposed to be like 27. If you give them the tsb number and tell them the brakes get hard after repeated slow speed stops that should be all they need.

Sent from my Pixel 2 using Tapatalk
 

Was it a quick repair?  Same day, next day?

 

Thanks for the info...

 

Posted

I dropped mine off at 10 and picked it up at end of day. It's probably a 2.5 hour repair. If I did it, it would be 5 hours.

Sent from my Pixel 2 using Tapatalk

Posted
I have a early appointment Wednesday.  Cross my fingers.  
Print out the tsb and bring it with you. They need to check upstream from the vacuum pump to make sure oil didn't get into other brake parts

Sent from my Pixel 2 using Tapatalk

  • Like 1
Posted
On 2/12/2019 at 9:27 PM, ShamrockShooter said:

 

Sounds like the hard / stiff brake pedal issue caused by the vacuum assist pump is headed closer to a recall. Almost 500 official complaints to NHTSA so far. They are rolling in 1 to 2 complaints a day.

 

Check out this letter to GM

https://static.nhtsa.gov/odi/inv/2018/INIM-PE18012-74378.pdf

 

 

Sent from my Pixel 2 using Tapatalk

 

 

 

Yep, I just spent $1,700 replacing the pump & brake booster last week. 2 weeks before that, dropped another $1,700 to replace cracked HVAC condenser & compressor. And in January the HMI for the touchscreen sh** the bed for a whopping $1,800. I do have 80k Highway miles on the truck but they’re gentle miles & the interior still looks/smells new. I have an ‘04 Sierra with over 200k on it & only had to replace an instrument cluster. I logged a complaint with NHTSA on the brake issue, so hopefully I’ll get reimbursed for some of that cost soon, but not holding my breath. For $50k, these trucks sure are temperamental. 

Posted
Yep, I just spent $1,700 replacing the pump & brake booster last week. 2 weeks before that, dropped another $1,700 to replace cracked HVAC condenser & compressor. And in January the HMI for the touchscreen sh** the bed for a whopping $1,800. I do have 80k Highway miles on the truck but they’re gentle miles & the interior still looks/smells new. I have an ‘04 Sierra with over 200k on it & only had to replace an instrument cluster. I logged a complaint with NHTSA on the brake issue, so hopefully I’ll get reimbursed for some of that cost soon, but not holding my breath. For $50k, these trucks sure are temperamental. 
Well on the bright side, you knocked all the problems out at once. It should be smooth sailing from here. The 100,000 mile 7 year warranty was about $3900 when I bought my truck which seems like a lot but repairs like yours make them worth the calculated gamble.

Sent from my Pixel 2 using Tapatalk

Posted

I was a victim of this defect. I had mine replaced under warranty as it was out of specs.

Posted
I was a victim of this defect. I had mine replaced under warranty as it was out of specs.
Did you report it to NHTSA?

Sent from my Pixel 2 using Tapatalk

Posted
7 minutes ago, ShamrockShooter said:

Did you report it to NHTSA?

Sent from my Pixel 2 using Tapatalk
 

I did not. where can i?

Posted
I did not. where can i?
www.nhtsa.gov big button on front page for report a problem.

Sent from my Pixel 2 using Tapatalk

Posted
49 minutes ago, ShamrockShooter said:

www.nhtsa.gov big button on front page for report a problem.

Sent from my Pixel 2 using Tapatalk
 

Just did. Luckily i have emails too from the dealership saying there isn't a problem...

  • 1 month later...
Posted

I just had mine replaced by the dealer. There is a "special policy" warranty set up for this problem. Mine was paid for by GM even though I have 70k on my 2015 Silverado. Check with your dealer before you repair it. I will go ahead and report mine.

Posted

Here is the extended warranty for the pump

 

 
N182202780 - Special Coverage Adjustment - Brake Assist Decreased Due to Vacuum Loss

GLOBAL SAFETY FIELD INVESTIGATIONS

DCS5013

URGENT - DISTRIBUTE IMMEDIATELY

 

Date:       April 10, 2019

              

Subject:   N182202780 - Special Coverage

                Brake Assist Decreased due to Vacuum Loss

              

Models:   2014 – 2017 Cadillac Escalade, Escalade ESV

                2014 – 2017 Chevrolet Silverado, Suburban, Tahoe

                2014 – 2017 GMC Sierra, Yukon, Yukon XL

              

To:           All General Motors Dealers

 

General Motors is releasing Special Coverage N182202780 today.  The total number of U.S. vehicles involved is approximately 3,357,584.  Please see the attached bulletin for details. 

 

 

This special coverage covers the condition described above for a period of 6 years or 72,000 miles (116,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after April 10, 2019 for US, (April 11, 2019 for Canada), are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to April 10, 2019 for US, (April 11, 2019 for Canada), must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below.

Posted
1 hour ago, cmurf70 said:

I just had mine replaced by the dealer. There is a "special policy" warranty set up for this problem. Mine was paid for by GM even though I have 70k on my 2015 Silverado. Check with your dealer before you repair it. I will go ahead and report mine.

Yours was under the 72K requirement.

Unfortunately after 5-6 years most K2 owners are not.

  • 3 weeks later...
Posted

I  received my letter announcing the special coverage for the "increased brake pedal effort" yesterday.  Has anyone else received this notice? 

 

Coincidentally, on April 19th, I experienced a very severe "hard brake pedal" while going thru a drive-thru.  In ~51,000 miles, this is the 2nd time this problem has occurred.  This last instance was quite memorable.  i am a large guy and had to use a lot of force on the pedal to keep the vehicle from rolling forward while idling in drive.  I honestly don't believe my 120 lb wife could have applied enough force to keep the vehicle stationary.  The April 19th "hard pedal" lasted several minutes thru many brake applications while idling in drive.  With cars ahead and people walking in-front of vehicle in the drive-thru, I wasn't about to troubleshoot and experiment with different engine RPM to see if vacuum could be restored.  Shutting vehicle off and turning back on did not restore the braking.  

 

A quick internet search quickly yielded volumes of info regarding this issue.  I reported the safety problem thru  NHTSA's website on 4/20/19.  Kind of interesting that less then 2 weeks later the special coverage notice is received by mail. 

 

Does anyone know if dealer can identify faulty vacuum pump with so few occurrences of failure over 3.5 years?  I dread being charged for something that very clearly matches the described hard brake pedal condition though would unlikely be able to be duplicated.  My vehicle did not throw a DTC code or "Service brake assist" alert as mentioned in the Notice.  Also, the Notice mentioning "failing to follow recommended oil change intervals" contributing to this issue seems like a "deny service card" and a bit of distraction from a known defect.  My vehicle has been pampered with ~5000mile OCI's since new with the recommended oil.   I do understand how the vacuum pump is lubricated with engine oil.

 

Vehicle is a 2015 Suburban LTZ with ~51,000miles. 

 

  

 

 

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
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    342,840
    Total Members
    8,960
    Most Online
    appletrav
    Newest Member
    appletrav
    Joined
  • Who's Online   2 Members, 0 Anonymous, 309 Guests (See full list)


  • Latest Articles

  • Posts

    • This is a 1/2 ton thing ONLY.  All HDs 2020-2026 have the two speed transfer case, with Autotrac as an option.     1/2 tons 2019-2026, regular 4x4s come with a single speed case (no 4LO!), and trucks with Z71 ordered, or all Trail Boss trucks come with the 2 speed case.  2 speed case is also an option on WT, and is also standard on High Country.  
    • 2013 5.3 still to this day calls for the PF48 filter.  Which as a 15psi bypass pressure.     There is a TSB, 17-NA-157 that talks about the PF-63 and PF-64 filters which have a higher bypass rating of 22psi.    TSB HERE - temp.xml   "Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions.  Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters"   It also calls out what engines use those filters.  The gen 4 small blocks were not on that list (LMG, LC9, L9H, L92, L94, L20, L96).  Gen 5 small blocks use the higher pressure filter.          That all said...   Your 7045 Napa filter is the PF63 equivalent, with 22psi bypass.  You are already using the higher bypass pressure filter.  You CAN keep using it, you don't technically have to use it though.  
    • Do you know WHY the filter relief setting was increased to 22 psig?    When the new system goes into the second stage the pump volume ramps up considerably. It was found that the 15 psi filter bypass setting put the filter in bypass on a warm engine when the second stage was activated. Raising the filter bypass setting forced the filter to do what it designed to do. Filter. Preventing debris from circulating during high load, high rpm operation.    So next question is how did GM find this out? VLOM/lifter failures and a deep dive by Melling Corp.    Last question. Is it required? Look at it like this; a motor may be equipped with a rev limiter. But it only works if the set point in reached. That 22 psig setting only matters if the pressure differential across the filter media exceeds 15 psig during normal warm operation. Second stage kicks in around 3000-3500 rpm.    I can't answer your question because I don't know you and how you use the truck. But I think there is enough information here to let you decide for yourself. 😉
    • Probably not their first rodeo, so it should go as planned most likely.  Typically the service manager or tech doing the swap will put some seat time to shake it down after they get it all put back together.  We usually put 50-100mi before we hand them back so if something happens, its not after you get it.  A coolant leaks, oil leaks, a ground left off or loose, vibration, etc.     The new engines so far have been good?  There's been a couple that have popped out there again (the replacement engine) but most have been okay.  
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...