GM bulletin PIT5636D
What it saysThis Preliminary information communicates an issues with a SES MIL and DTC P1005 and to replace the fuel pump driver control module with an updated part number. NHTSA’s full summary ↓
GM filed this with NHTSA as a service bulletin dated Oct 17, 2023, received Dec 4, 2023, about the air bags. It names 4 model years across Chevrolet and GMC (2019–2020). 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 an issues with a SES MIL and DTC P1005 and to replace the fuel pump driver control module with an updated part number.
Trouble codes it names: P1005
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT5636D | Service bulletin | Oct 17, 2023 | 10246007 | 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 themChevrolet 2 model years
GMC 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 4 model years this bulletin names have filed 1,942 complaints with NHTSA since 2015. 332 of them name Electrical System, Fuel/Propulsion System — 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 72 owners who gave an odometer reading for Electrical System reported it at a median of 11,750 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Three days after purchasing my 2020 chevy 2500 Silverado, on september 28th, 2020 around 1253 I tried to start my truck and it wouldn't start. The truck turned over but seemed like it wasn't getting fuel. I then received a diagnostic alert. After changing the relay the truck ran fine.
2020 Chevrolet Silverado 2500HD · Electrical System · filed with NHTSA Oct 23, 2020
With only 500 miles on the truck/engine oil pressure has been dropping drastically while going from drive to idle. It drops frim 60 to under 30. Also battery power gauge drops well below 14 when originally was over 14. This also began at the same time oil pressure issues began
2019 Chevrolet Silverado · Electrical System · filed with NHTSA Jul 3, 2019
Service DEF message in truck that will soon result in reduced speed. Local and purchasing dealers both stated a new DEF tank is needed. A tank is not available and is on back order
2020 Chevrolet Silverado 2500HD · Fuel/Propulsion System · filed with NHTSA Mar 18, 2022
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 air bags
Source: same model, same component group1 other manufacturer communication filed against these GM models under the same component group (air bags), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PIP5925 | Service bulletin | May 23, 2023 | This Preliminary information communicates to the dealer technician that engineering is aware of a concern with the teen driver feature not o… |
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 PIT5636D 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 PIT5636D 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 PIT5636D cover?
The manufacturer filed it against 4 model years across 2 brands (Chevrolet and GMC): 2019 Chevrolet Silverado, 2020 Chevrolet Silverado 2500HD, 2019 GMC Sierra, 2020 GMC Sierra 2500HD. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.