GM bulletin PIT5774G
What it saysThis Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Mar 15, 2024, received Apr 15, 2024, about the visibility/wiper. It names 8 model years across Chevrolet, GMC and Cadillac (2021–2022). 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 · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering has released updated roof consoles to correct this concern. Dealers are to replace the roof console.
Trouble codes it names: B1A7A U1121
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT5774G | Service bulletin | Mar 15, 2024 | 10253087 | 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 4 model years
GMC 2 model years
Cadillac 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 8 model years this bulletin names have filed 2,177 complaints with NHTSA since 2015.
I was driving down the interstate and unexpectedly the sun roof exploded. There was no debris from the cars distantly on front of me that could've damaged the sunroof like this. There were no temperatures fluctuations that coud've caused this.
2022 Chevrolet Tahoe · Visibility/Wiper · filed with NHTSA Mar 13, 2023
The contact owns a 2021 Chevrolet Suburban 1500. The contact stated that while driving at approximately 75 MPH, there was a loud explosion coming from the vehicle. The contact noticed that the sunroof had shattered.
2021 Chevrolet Suburban · Visibility/Wiper · filed with NHTSA Dec 29, 2021
Wipers quit working while driving through a rain episode. We tried to have the car to "reset", stopped at a gas station, stopped the car, we all got off and locked the car for at least 5 minutes. Still no wipers
2022 Chevrolet Suburban · Visibility/Wiper · filed with NHTSA Jul 13, 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 visibility/wiper
Source: same model, same component group14 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 |
|---|---|---|---|
| 24-NA-164 | Service bulletin | Mar 20, 2025 | This bulletin provides information on Wiper Blade Maintenance Tips. |
| 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… |
| PIT6132 | Service bulletin | Mar 12, 2024 | This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Enginee… |
| N242438230 | Service bulletin | Mar 4, 2024 | Customer Satisfaction Program - On certain vehicles, customers were inadvertently charged for standard content, laminate glass windshield, d… |
| PIT5734G | Service bulletin | Jan 30, 2024 | This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, GMC and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM PIT5774G 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 PIT5774G 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 PIT5774G cover?
The manufacturer filed it against 8 model years across 3 brands (Chevrolet, GMC and Cadillac): 2022 Cadillac Escalade, 2021 Cadillac Escalade, 2022 Chevrolet Suburban, 2021 Chevrolet Suburban, 2022 Chevrolet Tahoe, 2021 Chevrolet Tahoe and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.