Chevrolet bulletin PIP4112T
What it saysThis Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. NHTSA’s full summary ↓
Chevrolet filed this with NHTSA as a service bulletin dated Sep 1, 2023, received Dec 26, 2023, about the engine. It names 31 model years (2016–2019). 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.
Get the next Chevrolet bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This concern may also be present while cruising at highway speeds and then an aggressive increase in throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to downshift.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIP4112T | Service bulletin | Sep 1, 2023 | 10247768 | 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.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2016 Chevrolet Caprice; 2017 Chevrolet Caprice; 2018 Chevrolet Caprice.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Chevrolet bulletins for one of these models
A weekly email, sent only in a week when Chevrolet files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 28 model years this bulletin names have filed 5,613 complaints with NHTSA since 2015. 1,960 of them name Power Train, Engine — 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 2017 Chevrolet Silverado, the 102 owners who gave an odometer reading for Power Train reported it at a median of 48,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
I bought my car in sept. 2016 after the first couple of months at random times the transmission makes a boom sound when slowing down from speeds over 55 MPH or during acceleration from stop and go rush hour traffic it's as if the transmission has to catch up with the accelerator. I get monthly diagnostics and nothing shows up as an issue
2016 Chevrolet Camaro · Power Train · filed with NHTSA Mar 19, 2018 · ODI 11080158
*takata recall* I have been noticing a lot of different issues with my 2017 Tahoe premier. The engine block is a deep rust color. Engine is extremely hot even hours later after parking. There is a thick black sludge that is on nearly every part under the truck. I started hearing a ticking noise that sped up as my driving speed increases.
2017 Chevrolet Tahoe · Engine · filed with NHTSA Aug 23, 2018 · ODI 11121798
On or about november 26, 2020, at 1:30 AM while driving on I-30 westbound in texarkana, tx traveling at the posted speed of 75 MPH in a 2018 Camaro zl1. The transmission blew out while in cruise control and all systems that transmit power from the engine or propulsion device to the wheels were lost and the vehicle had to coast onto the…
2018 Chevrolet Camaro · Power Train · filed with NHTSA Nov 29, 2020 · ODI 11376919
In depth: 2017 Chevrolet Camaro transmission and drivetrain problems → · 2018 Chevrolet Colorado transmission and drivetrain problems → · 2017 Chevrolet Colorado transmission and drivetrain problems → · 2016 Chevrolet Colorado transmission and drivetrain problems →
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 engine
Source: same model, same component group246 other manufacturer communications filed against these Chevrolet models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N262572131-01 | Service campaign | Oct 23, 2026 | Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the oil galley in the cylinder head was not dril… |
| N262576260 | Service campaign | Oct 15, 2026 | General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition that could cause a small exhaust le… |
| N262572131 | Service campaign | Aug 28, 2026 | Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the oil galley in the cylinder head was not dril… |
| N262568830 | Service campaign | Aug 4, 2026 | Certain vehicles listed above may have a condition in which the oil filter was not adequately tightened. Dealers are to check and tighten th… |
| N262546590-01 | Service campaign | Jul 15, 2026 | Certain vehicles listed above, may have a condition where coolant leaks from the radiator hose quick connect at the radiator inlet. This sp… |
| N262552620 | Service campaign | May 11, 2026 | Certain vehicles may have a condition that could cause the cylinder 2 glow plug to fail. If this failure occurs, the Malfunction Indicator… |
| N262548050 | Service campaign | Apr 24, 2026 | Certain vehicles, may have a condition that could cause the Catalytic Converter to fail. If this failure occurs, the Malfunction Indicator L… |
| N252494003-02 | Service campaign | Jan 21, 2026 | Certain vehicles listed above, may have a condition where the connecting rod and/or crankshaft engine components in these vehicles may have… |
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 PIP4112T 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 PIP4112T 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 PIP4112T cover?
The manufacturer filed it against 31 model years: 2018 Chevrolet Camaro, 2017 Chevrolet Camaro, 2016 Chevrolet Camaro, 2018 Chevrolet Colorado, 2017 Chevrolet Colorado, 2016 Chevrolet Colorado and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.