GM bulletin PIT6012A
What it saysThis Preliminary information communicates Diagnostic information for the Check Engine Light On, Spongy Brake Pedal Feel, Codes C05D3 and P25A2 Stored. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Mar 22, 2024, received Apr 15, 2024, about the service brakes. It names 4 model years across Chevrolet and GMC (2023–2024). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · GMC.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Preliminary information communicates Diagnostic information for the Check Engine Light On, Spongy Brake Pedal Feel, Codes C05D3 and P25A2 Stored.
Trouble codes it names: C05D3 P25A2
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6012A | Service bulletin | Mar 22, 2024 | 10253103 | not found |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
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Model years it names
Source: as the manufacturer filed themChevrolet 2 model years
GMC 2 model years
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 4 model years this bulletin names have filed 526 complaints with NHTSA since 2015. 77 of them name Service Brakes — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Bought car on 10/28/23 and as I was leaving the dealership, I applied the brake and the pedal went to the floor. An error code came up "Brake System Failure". The truck was immediately brought back to the service department. 10/31/23- Capital Chevrolet service department checked the error and deemed the vehicle was safe to drive.
2023 Chevrolet Colorado · Service Brakes · filed with NHTSA Nov 28, 2023
The contact owns a 2024 GMC Canyon. The contact stated that while driving at an undisclosed speed and attempting to slow the vehicle while in traffic, the brake pedal was depressed; however, the vehicle failed to slow as quickly as needed. The contact stated that the brake pedal required increased effort to slow the vehicle.
2024 GMC Canyon · Service Brakes · filed with NHTSA Aug 6, 2024
Got notification of brake system failure on the dashboard and lost all braking ability. After the truck was shut off they worked again, perfectly fine. This scenario repeated itself and I lost breaks again. The truck has 200 miles on it and after looking online seems to be a common issue
2024 Chevrolet Colorado · Service Brakes · filed with NHTSA Oct 8, 2024
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the service brakes
Source: same model, same component group13 other manufacturer communications filed against these GM models under the same component group (service brakes), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N252521980-01 | Service campaign | Oct 31, 2025 | Certain vehicles listed above, may have a condition in which the Brake System Control Module does not have the latest software. Dealers are… |
| N252521980 | Service campaign | Oct 22, 2025 | Certain vehicles, may have a condition in which the Brake System Control Module does not have the latest software. Dealers are to reprogram… |
| 25-NA-064 | Service bulletin | Mar 20, 2025 | This informational bulletin provides information on the brake system warning lamp illuminated on driver information center (DIC), brake peda… |
| 24-NA-048 | Service bulletin | Feb 6, 2025 | This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engine… |
| 21-NA-142 | Service bulletin | Jan 9, 2025 | This technical bulletin provides repair information to correct a customer concern of hearing front brake grind/groan noise after sitting ove… |
| PIT5696H | Service bulletin | Dec 6, 2024 | This preliminary information discusses potential for a code C0010.5A to store in the brake controller which appears to be setting falsely or… |
| 23-NA-149 | Service bulletin | Oct 26, 2024 | This technical bulletin provides a procedure to correct the condition of Trailer Brake Disabled and/or DTC C1114 Stored During Pulling a Tra… |
| PIT6212B | Service bulletin | Oct 25, 2024 | This Preliminary information communicates an issue with the Hydrastar Electric Over Hydraulic trailer brake system causing a voltage spike i… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet and GMC, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM PIT6012A a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the PIT6012A repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does PIT6012A cover?
The manufacturer filed it against 4 model years across 2 brands (Chevrolet and GMC): 2024 Chevrolet Colorado, 2023 Chevrolet Colorado, 2024 GMC Canyon, 2023 GMC Canyon. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.