Jump to content

2020 Rear Pad Replacement

Jasoned
 Share

Recommended Posts

Jasoned Enthusiast

Jasoned

Posted
Posted (edited)

Hey guys. Looking for a little bit of information as I have been unable to find anything definitive  through my many searches. I have a 2020 1/2 ton and I am replacing the rear brake pads and wondering if it’s possible to do myself. I’ve always replaced my own pads yet with the electronic parking brake there seems to be an issue, GM says I need a scan tool to release the caliper piston and I’m just wondering if there’s another way around this. Tia

Edited by Jasoned
Jasoned Enthusiast

Jasoned

Posted
  • Author
Posted

Because rear brakes are garbage on these trucks, completely worn out after 19,000 km. If you read up on it it’s a very common issue, both sides are worn evenly left to right. 
I did finally find an article on how to do this the EPB needs to be removed with the battery disconnected and then you are able to manually back the piston stop out and then compress the piston. A few extra steps but it is doable only problem is the brake wear monitor needs to be reset with a scan tool, total money grab for GM. 

kodiakdenali Enthusiast

kodiakdenali

Posted
Posted

Wow. I didn't realize it was such a pain.

The wear indicator can't be reset by the owner? It can be turned off completely, for years I used a portable wear indicator called flashlight 🙂 always worked great!

 

My truck has around 10,000km...rear brake pads are at 96%. are you sure your brakes are in proper working order?

  • Like 1
TxTruckMan Senior Enthusiast

TxTruckMan

Posted
Posted

I've never had a truck need new brakes prior to 100k miles.  I'd bring it to the dealer for warranty if you think the pads are worn that quickly.

 

There was a comment I read in a thread where the brake wear indicator screen was incorrect and had to be updated.  Maybe that's the problem?

Gangly Senior Enthusiast

Gangly

Posted
Posted (edited)
On 9/14/2021 at 8:39 PM, Jasoned said:

Because rear brakes are garbage on these trucks, completely worn out after 19,000 km. If you read up on it it’s a very common issue, both sides are worn evenly left to right. 
I did finally find an article on how to do this the EPB needs to be removed with the battery disconnected and then you are able to manually back the piston stop out and then compress the piston. A few extra steps but it is doable only problem is the brake wear monitor needs to be reset with a scan tool, total money grab for GM. 

 

Make sure that before you start the battery is disconnected to prevent the brake master cylinder from pressurizing the hydraulic system during its automated self diagnostic tests that can possibly occur when a door is opened or the key transmitter is activated. 

 

On the T1's, the brake wear sensor should be replaced with every brake pad change.  The wear percentage can be reset from the driver's interface but it is the parking brake that sometimes needs to be recalibrated and that would need to be done with a scan tool. However, if you dont have a scan tool, a procedure I found online, but have not verified yet, is as follows:

 

 

  1. With the ignition ON, apply and hold the brake pedal.
  2. Push and hold the EPB switch down for 5-6 seconds.
  3. Release the EPB switch.
  4. Momentarily push the EPB switch down.
  5. Remove the EPB MODULE fuse and reinstall.
  6. Apply the EPB.
  7. Release the EPB.

For removal of the brake pads:

  • DO NOT use any air tools to remove or install the guide pin bolts. Use hand tools ONLY.
  • Install an open end wrench to hold the caliper guide pin in line with the brake caliper while removing or installing caliper guide pin bolt. DO NOT allow the open end wrench to come in contact with the brake caliper. Allowing the open end wrench to come in contact with the brake caliper will cause a pulsation when the brakes are applied.

 

Edited by Gangly
  • 2 weeks later...
lebag335 Enthusiast

lebag335

Posted
Posted
On 9/26/2021 at 3:23 AM, Transient said:

Wow!  This may be the first vehicle I own that I won't be replacing the brakes on when it comes time.

 

No way I'm doing that either!  Unbelievably complicated.  Ugh...

Acpantera Enthusiast

Acpantera

Posted
Posted

I don't think it's that big of a deal. With the parking brake off, disconnect the wires to the caliper, remove the EPB motor from the caliper, turn the coupler that the motor meshes with clockwise till it stops, compress the caliper piston and replace the pads. After assembling, pump the brakes up, cycle the EPB a few times and carry on.

  • Like 1
Gangly Senior Enthusiast

Gangly

Posted
Posted
On 9/28/2021 at 3:27 PM, Acpantera said:

I don't think it's that big of a deal. With the parking brake off, disconnect the wires to the caliper, remove the EPB motor from the caliper, turn the coupler that the motor meshes with clockwise till it stops, compress the caliper piston and replace the pads. After assembling, pump the brakes up, cycle the EPB a few times and carry on.

Yup, sounds a lot more in depth than it actually is.  

  • 3 years later...
Steve Chevy New Member

Steve Chevy

Posted
Posted

 GM has published technical service bulletin in March 2023 titled “Rapid Rear Brake Pad Wear” (21-NA-089) and it acknowledges the rear brake problem in 2020 - 2021 Chevrolet Silverados and mentions that they are now installing a shield to prevent road grime build up a calipers. Concludes that it’s not a safety issue so no recall, but essentially recommends that customers wash their brakes and it’s customer maintenance? It a new maintenance recommendation, but not included in the service manual!  Strange as GM does not spend money on an engineering change if there isn’t a problem.  Now you need to replace rotors with every brake job! Could calipers be next!

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

    • Byrds8
      MPG at 600 miles

      By Byrds8 · Posted

      100% agree, there are a lot of variables. I definitely do not drive I’ve like a grandpa but also don’t drive like I stole it. Truck is currently in the shop so I’ll have to get weight later. The price for driving it doesn’t bother me. My precious was a 6.2l so the cost between the two is a wash. 
    • c4racer2
      Turning radius

      By c4racer2 · Posted

      if you want a short turning radius get a short bed Colorado!
    • c4racer2
      summer road trips in the 2026 2500HD

      By c4racer2 · Posted

      that is pretty awesome MPG there!  I think so far one observation is these trucks do way better on MPG under 65mph vs 70+ and they really suffer at 75+   I noticed on the stretches into NE on 76 and 80 which is posted 75MPH and I was doing 82 I was getting more like 13.    
    • newdude
      Bent valve in 2025 GMC Canyon Denali - Requires engine swap at 14K miles

      By newdude · Posted

      No ETA is available for that engine at the moment in the GM system.   I would start at the dealer.  Try and talk to the parts manager or service manager and see if they can start a CX Connect case and get an ETA from GM on when engines may be available.  If they just check Parts Workbench and say "no eta", they aren't trying hard enough.  They need to do a CX Connect and chat with DPAC to find the ETA.      
    • Chuck FB
      MPG at 600 miles

      By Chuck FB · Posted

      I would have to read back to get a better picture in my mind of some of the other comments and what they were using for a driving scenario they based the fuel mileage off of. That is why the fuel mileage conversation is extremely difficult to make fair comparisons from. If I was to be living in town and only driving around town, light to light and some longer stretches that doesn't have a light every block, and the usual stop at a grocery store and the bank and so on and so forth, my fuel mileage even during the summer time would be so bad with my truck I don't even want to know how bad it would be !. Then add in winter time and idling to warm it up to clear the windows and driving through snowy streets etc, large heavy trucks with gas engines have NEVER been worth crap for fuel mileage and why some little pot licker of a car with wheelbarrow tires and a 1300 cc four cylinder non turbo engine was the ticket to using a mere fraction of the fuel over a full size pickup.    By the way my truck has the 34" tires as its a HC but not the BFG KO3 tires ( that was an option for my truck but the sales guy couldn't figure out what the tires actually were so that never got on the order until it was too late to change the truck order ). So what fuel mileage your getting actually sounds good for "town driving" and with my truck when I go to town the fuel mileage keeps increasing as I get closer to town because it takes quite a while to get the driveline oils warmed up ( and why it always shows better fuel mileage on the return trip from town because its already warmed up ) but once I am in town that fuel mileage average just keeps dropping the more I mess around town and then has to recover back to something reasonable again by the time I get home for an over all average.    I'd be curious what your sticker says for the factory weight of your truck, mine is close around that 7700 lb due to the options it has. But anyway the long and short is, vehicle weight, higher rolling resistance heavy tires and a hefty driveline and a relatively large gas engine make for crap fuel mileage in stop and go scenarios, all one can do is drive it easy off the line at each stop and as my dad had said over the years, drive like a raw egg is under your foot and that's the best one can do. Years back with a carbed engine and if the carb was getting a bit out of tune etc as would the ignition system, the fuel mileage on pickups with larger engines was just awful compared to what your getting. We pay the fuel price penalty for driving HD trucks over some little vehicle, that is the reality. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...