GM bulletin PIT6120
What it saysThis Preliminary information communicates information to direct to GM Upfitter bulletin 193 for installation instructions for the 9L7 Upfitter Switches. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Jan 30, 2024, received Feb 12, 2024, about the visibility/wiper. It names 10 model years across Chevrolet and GMC (2022–2024). 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 information to direct to GM Upfitter bulletin 193 for installation instructions for the 9L7 Upfitter Switches.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6120 | Service bulletin | Jan 30, 2024 | 10250004 | 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 5 model years
GMC 5 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 10 model years this bulletin names have filed 3,146 complaints with NHTSA since 2015.
Windshield wipers have stopped/paused during operation on two occasions midway through clearing rain from the windshield while driving down the road during rain events. Each time this has happened, the wipers have paused for approximately 2 seconds and then continued working without adjusting the controls.
2023 Chevrolet Silverado · Visibility/Wiper · filed with NHTSA Oct 27, 2023
The truck bed cover is not secure, it fits in via a channel with no straps or other protections and so when driving on the highway, it flies off from the connection to the cab and you can’t see behind you. It then smacks into the car until you can pull over. There is no protection against this
2024 GMC Sierra · Visibility/Wiper · filed with NHTSA Mar 17, 2025
The contact owns a 2024 Chevrolet Silverado EV. The contact stated that while operating the vehicle in sub-zero temperatures, the HVAC unit failed to blow hot air through the vents. During the failur,e the contact was unable to defrost the windows.
2024 Chevrolet Silverado · Visibility/Wiper · filed with NHTSA Jan 30, 2026
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 visibility/wiper
Source: same model, same component group18 other manufacturer communications filed against these GM models under the same component group (visibility/wiper), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25-NA-170 | Service bulletin | Sep 3, 2025 | This service bulletin provides a repair procedure to correct a customer concern of Loss of Air Conditioning, Weak Cooling, and/or Warm Air C… |
| 24-NA-164 | Service bulletin | Mar 20, 2025 | This bulletin provides information on Wiper Blade Maintenance Tips. |
| 24-NA-046 | Service bulletin | Mar 4, 2025 | This technical bulletin provides a procedure to correct the condition of Suction Cup Marks on Window Glass. |
| PIE0818 | Service bulletin | Feb 22, 2025 | This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer lis… |
| 24-NA-259 | Service bulletin | Nov 27, 2024 | This service bulletin provides a service procedure to correct customer concerns of Air Conditioning (A/C) Not Working and/or Blows Warm Air. |
| 23-NA-167 | Service bulletin | Nov 22, 2024 | This informational bulletin provides information on Outside Rear View Mirror Defog or Defrost Times Different for Passenger and Driver Mirro… |
| PI0754G | Service bulletin | Jul 31, 2024 | This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic. |
| 16-NA-342 | Service bulletin | Jul 23, 2024 | This service bulletin provides a procedure to check the rearview mirror coax connector for looseness by disconnecting and reconnecting the e… |
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 PIT6120 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 PIT6120 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 PIT6120 cover?
The manufacturer filed it against 10 model years across 2 brands (Chevrolet and GMC): 2024 Chevrolet Silverado, 2023 Chevrolet Silverado, 2022 Chevrolet Silverado, 2024 Chevrolet Silverado 2500HD, 2024 Chevrolet Silverado 3500HD, 2024 GMC Sierra and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.