GM bulletin PIT6135
What it saysThis Preliminary information communicates to dealership technicians and GM Customers that GM is aware of this issue and working on a permanent repair. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Mar 19, 2024, received Apr 15, 2024, about the back over prevention. It names 2 model years across Chevrolet and GMC (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 to dealership technicians and GM Customers that GM is aware of this issue and working on a permanent repair. Once available, this PI will be updated.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6135 | Service bulletin | Mar 19, 2024 | 10253094 | 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 1 model year
GMC 1 model year
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 2 model years this bulletin names have filed 333 complaints with NHTSA since 2015.
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 back over prevention
Source: same model, same component group7 other manufacturer communications filed against these GM models under the same component group (back over prevention), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PIT6075 | Service bulletin | Oct 17, 2023 | This Preliminary Information communicates correction of a software anomaly causing a brake system code to store. |
| N23-2411312 | Service bulletin | Sep 5, 2023 | '(There may be future updates under this same release number.) Your vehicle keeps getting better. This software update includes the follo… |
| N23-2411311 | Service bulletin | Sep 5, 2023 | (There may be future updates under this same release number.) Your vehicle keeps getting better. This software update includes the follow… |
| PIT6047B | Service bulletin | Aug 17, 2023 | This Preliminary information communicates to dealership technicians to create a USB file that will have the radio ignore the BCM message for… |
| PIT6018C | Service bulletin | Aug 8, 2023 | This Preliminary information communicates the possibility of a resetting of some information modules prior to delivery. |
| PIT6018A | Service bulletin | Jul 26, 2023 | This Preliminary information communicates the possibility of a resetting of some information modules prior to delivery. |
| PIT6027 | Service bulletin | Jun 1, 2023 | This Preliminary information communicates that there is no software compatible with the accessory keypads. |
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 PIT6135 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 PIT6135 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. Every GM warranty extension on file lists the ones GM has filed.
Which vehicles does PIT6135 cover?
The manufacturer filed it against 2 model years across 2 brands (Chevrolet and GMC): 2024 Chevrolet Colorado, 2024 GMC Canyon. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.