Jump to content

Tire tread and brake pad depth for GM Certified

bigmikey

By bigmikey
in Ask A GM Technician

Recommended Posts

bigmikey New Member

bigmikey

Posted
Posted

Afternoon everyone,

 

As of recently I'm the proud owner of a certified 2015 GMC Sierra 1500. Loving it so far!

 

When I was purchasing it the dealer showed me the GM Certified worksheet that they fill out to send to GM to have the vehicle certified. As they explained it to me, GM will then tell them what they need to do to make the truck meet its certification standards. After bringing the truck home, I've noticed that the tire tread depth and brake pad thickness measurements that they had listed on the worksheet are not nearly as good as they had represented.

 

I know that there must be specifications for the point at which GM would have forced the dealer to replace the tires and or brakes to get the vehicle certified. My question is this... what are those specifications? I've called the GM Certified call center to ask this very question to no avail and I want to know whether I should be asking for new tires or brakes.

 

Many thanks in advance,

Mike

Justin101714 Enthusiast

Justin101714

Posted
Posted

550490adf17dafdc2cf9bd9b9cd0914c.jpg

 

Tires minimum tread depth is 5/32 across the tread surface. They must be all the same brand with no plugs.

 

A minimum of 3mm of brake pad and shoe thickness. If they are less than that GM, DuraMax/Durastop or Advantage parts used only.

 

Glad I kept this around. I've had this since 2011. The book no longer exists.

Justin101714 Enthusiast

Justin101714

Posted
Posted

He's already bought the vehicle..... Just take it in and express your concerns. They have a copy of all the certification guidelines. They are available on their GM logins.

 

Very possible a underpaid technician or lube guys ran this certification through. I see it countless times. They aren't aware of the guidelines and probably assumed that it's a 2015, it should be okay....

 

Anyway, since you bought it certified used, if it's below guidelines they have no choice but to fix it.

bigmikey New Member

bigmikey

Posted
  • Author
Posted

Many thanks Justin! Even though the tread depth and brake pad thickness aren't what was represented on the GMC Certified worksheet, it looks like they're still within spec. Tires are at 7/32 and the brake pads are definitely thicker than 3mm, so I'm good. No need to go after the dealer for replacements.

 

Mike

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • CamGTP
      Gas Prices

      By CamGTP · Posted

      It varies a ton around me. Some places are still at $5.00 or higher and others are way down into the $4's.   Offroad diesel was $4.02 at the one station I passed today.
    • Hdwrguy
      2027 Chevrolet Silverado: Official Discussion

      By Hdwrguy · Posted

      So after reading the reveal from Chevrolet, I kept asking myself...why did the trim levels change?   Here are the official ones:   Work Truck (WT): The quintessential fleet truck, built with durable, easy-to-clean interiors for commercial or utilitarian use. Custom: A stylish, road-oriented trim that adds a more refined appearance, standard dual exhaust, and modern exterior styling. Custom Trail Boss: An entry-level off-roader featuring a 2-inch factory suspension lift and 34-inch mud-terrain tires on a budget. Silverado: Serving as the new base consumer truck (replacing the previous LT trim), it comes standard with the Z71 off-road package when equipped with 4WD. Trail Boss: Steps up the off-road hardware with the 2-inch lift, 34-inch tires, monotube shocks, an exclusive off-road hood, and more premium interior options. ZR2: The flagship off-roader. It boasts 35-inch mud-terrain tires, Multimatic DSSV dampers, front and rear electronic lockers, forged carbon-fiber interior accents, and an available hardcore Bison Edition (co-developed with AEV). High Country: The pinnacle of luxury. It replaces bright chrome with modern satin chrome, 22-inch wheels, premium leather, real wood interior trim, a panoramic sunroof, and an exclusive front-passenger touchscreen. As others have stated, why would you want a Silverado - 'Silverado' - wth?? LT needs to remain!!!   Also, there will no longer be a dedicated Z71 model.  All 4x4 trucks will have the Z71 package. Carplay is also something that cannot be removed.  Hopefully it will remain.     I am excited about the 5.7L V8 (350 C.I.D.)  Old school Chevy power.  My only concern is whatever version of AFM/DFM cylinder deactivation.  Too bad that isn't an option a buyer can choose to have or not.   I will definitely be stopping by my local dealership when these trucks start showing up.
    • richard wysong
      Gas Prices

      By richard wysong · Posted

      I haven't seen diesel for less than $5.30 anywhere in my area
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      The not as clean as one would assume theme with the new engine oil, that reminds me of comments over the years with mechanics not always being so on board with filling an oil filter, not from the center anyway due to that typically being the clean side of the filter, danger of some contaminant falling into the filter if not careful but the realization now that the oil may not be as pure as one had assumed it would surely be. Yes it would be possible to fill from the small holes but that means messing with something to prop open the anti drain back valve if the filter is so equipped and not damage that valve in the process. Me, I have hardly ever prefilled an engine oil filter however I have prefilled diesel fuel filters with a filter on a fuel bulk tank and for anyone that has messed with diesel engines with filters and units that have a limited or no way of priming them, putting on a dry filter is a bad day to say the least with those crappy systems. But anyway back to not so clean engine oil, indeed perhaps its not so bad after all that I have not made a practice of prefilling oil filters.    As Grumpy Bear commented on keeping things clean, that I really have to wonder what the typical practice is at a dealer or any other shop that changes engine oil, do they make sure to wipe or wash off the oil plug and certainly if it fell into some gunk or onto a dirty floor, or that they wiped the filter mounting flange and didn't go and use some dirty rag and end up adding dirt to the inside of the head of the filter mount. Or be careless in how they stored or handled the new filter and if they were bumping into items under the vehicle with the filter opening facing up and having dirt drop right into the filter and if so right into the threaded center that is on the clean side. The top side, did they clean away the built up gunk that may be around the filler before removing the cap or to be really careful at that point that something right close to the filler hole that was hidden under the caps flange won't fall into the engine. Or did they clean the funnel or was that just laying there covered in oil from the oil change before and dust kicked up from sweeping the floor stuck to the oil and now that will go running into the next persons engine due to just not cleaning the funnel as "they won't know anyway" attitude as that young guy is more worried about taking a break so he can go outside and smoke a joint. Just random points that came to mind when I think about what some hired personnel may do that the shop foreman has no idea of or perhaps the whole attitude of some shops may be "eh ... who cares, they will never know the difference anyway".  
    • CamGTP
      Gas Prices

      By CamGTP · Posted

      $3.69 for 87 octane.   $4.24 for Diesel in town.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...