Chevrolet bulletin PIT6145
What it saysThis Preliminary information communicates information to verify if the vehicle frame has been lengthened or shorted as a result of the vehicle upfit. NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service bulletin dated Mar 28, 2024, received Apr 15, 2024, about the electronic stability control. It names 9 model years (2019–2025). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Preliminary information communicates information to verify if the vehicle frame has been lengthened or shorted as a result of the vehicle upfit. Dealer to refer to GM Upfitter bulletin 171 if frame has been modified.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6145 | Service bulletin | Mar 28, 2024 | 10253115 | 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2019 Chevrolet 6500; 2019 Chevrolet Duplicate Silverado 5500.
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 7 model years this bulletin names have filed 4,126 complaints with NHTSA since 2015. 414 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.
On the 2019 Chevrolet Silverado, the 122 owners who gave an odometer reading for Service Brakes reported it at a median of 8,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Vehicle lost engine power on the road. Light display came on stating engine reduce power. It would not pull the trailer. Had to pull over and the display went away only to appear again later. We brought vehicle to chevrolet dealer . The part needed to hopefully fix is on backorder. There is also recall with no available remedy.
2020 Chevrolet Silverado · Service Brakes · filed with NHTSA Jul 10, 2025
In August of 2025 I purchased a Chevy MD 5500 from Paul Masse, Inc., in RI. From the time of delivery the truck had a serious shake while operating. Paul Masse, Inc., told me that the tires had flat spots from sitting on the lot prior to purchase. As time went on the dealership placed two new sets of tires on the truck.
2024 Chevrolet Silverado · Service Brakes · filed with NHTSA Apr 18, 2026
I originally bought a new 2019 Chevrolet Silverado 1500 ld on 06/08/2019, I really liked the truck and its many features. After several weeks I noticed the whole underside frame and driveline components were rusted and corroded. I brought it back to my dealer and they immediately located a replacement vehicle for me.
2019 Chevrolet Silverado · Structure · filed with NHTSA Jul 25, 2019
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 electronic stability control
Source: same model, same component group2 other manufacturer communications filed against these Chevrolet models under the same component group (electronic stability control), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PIT4322P | Service bulletin | Feb 21, 2024 | This Preliminary Information communication provides information to the technician about vehicles that have an unwanted Stability Activation… |
| PIT6050 | Service bulletin | Aug 21, 2023 | This Preliminary information communicates to dealership technicians that if they receive a radio with the 2 stickers as noted above, the rad… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Chevrolet PIT6145 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 PIT6145 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 PIT6145 cover?
The manufacturer filed it against 9 model years: 2025 Chevrolet Silverado, 2024 Chevrolet Silverado, 2023 Chevrolet Silverado, 2022 Chevrolet Silverado, 2021 Chevrolet Silverado, 2020 Chevrolet Silverado and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.