Service Parking Brake

slimjim2525 · June 4, 2024

19 hours ago, Amondy_19_Silverado_RST said:

Have had my “Service parking brake” light and warning message on for a little bit now. Read about software update as a possible fix. Took it to a certified dealer and had them install the update and paid $150+ for this. Did not fix issue. Took it in today for diag at my local shop…pictures of invoice to show diag. Has anyone found the formal solution to this?? Getting really frustrated with this whole ordeal. This is my first truck purchase…I have always loved Chevy/GM…just not loving this situation right now. My personal scanner first detected a P25A2 code from the OBD2 connection. Still no resolution and money spent going in circles…GM Customer Service…can you please help me??!!

So, I just had this done at my dealer. They said that my driver side parking brake actuator had a lot of resistance when they tested ohms. They replaced the actuator.

Amondy_19_Silverado_RST · June 4, 2024

17 minutes ago, slimjim2525 said:

So, I just had this done at my dealer. They said that my driver side parking brake actuator had a lot of resistance when they tested ohms. They replaced the actuator.

Do you know if this is something I can do at home?? Could you send a copy of the invoice to show part numbers?? If I can avoid a huge expense…it would help greatly!

Scott2024 · August 7, 2024

2020 GMC Sierra AT4 HD - 39k Miles

I have now joined this elite club of Park Break Service fails. Dealer told me today that my Parking Break Shoes are completely shot with 39k Miles. All other breaks are great, simply the Parking Break needs to be replaced at a cost of $868.63. This is not something I willing to pay for when it looks like a fault of GMCs.

Have anyone else had success with them covering this?

-Scott

Afton, MN

Amondy_19_Silverado_RST · August 7, 2024

I was able to fix this myself, and I am not a mechanic. The part was dirt cheap as well on parts geek. I believe it took me all of 1hr to swap old part with new, that includes setup and tear down. You need to have a diag tool to recalibrate it otherwise you’ll go into limp mode. I got one off Amazon for maybe 150! All in all I was done with the entire project in an hour and only $200. Well worth the effort.