GM bulletin PIT6037
What it saysThis Preliminary Information communicates the possibility of an issue with the HVAC case drain causing water to accumulate on the floor. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Jun 29, 2023, received Jul 17, 2023, about the visibility/wiper. It names 2 model years across Chevrolet and GMC (2023). 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 the possibility of an issue with the HVAC case drain causing water to accumulate on the floor.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6037 | Service bulletin | Jun 29, 2023 | 10239186 | 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 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 198 complaints with NHTSA since 2015.
The contact owns a 2023 GMC Canyon. The contact stated while driving at an undisclosed speed, he became aware that the defroster had failed to properly defrost the windshield. The contact also stated that because of the failure, the windshield wipers had failed to function properly after becoming frozen.
2023 GMC Canyon · Visibility/Wiper · filed with NHTSA Apr 8, 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 group8 other manufacturer communications filed against these GM models under the same component group (visibility/wiper), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N252541790 | Service campaign | Feb 12, 2026 | Customer Satisfaction Program. Certain vehicles listed above may have a condition where there may be a gap and unsealed area in the windshi… |
| 25-NA-062 | Service bulletin | Mar 21, 2025 | This technical bulletin provides a procedure to correct the condition of Windshield Wipers Inoperative and/or Motor Nut Loose / Missing. |
| 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. |
| 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. |
| PIT6103A | Service bulletin | Feb 23, 2024 | This Preliminary Information communicates a possible issue with the power windows and object sensor indicators caused by a window switch. |
| PIT6103 | Service bulletin | Dec 13, 2023 | This Preliminary Information communicates a possible issue with the power windows and object sensor indicators caused by a window switch. |
| PIT5099G | Service bulletin | Sep 26, 2023 | This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows… |
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 PIT6037 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 PIT6037 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 PIT6037 cover?
The manufacturer filed it against 2 model years across 2 brands (Chevrolet and GMC): 2023 Chevrolet Colorado, 2023 GMC Canyon. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.