Filter on, saved
  • Manufacturer Alta Motors (not used on this page)×
Major brands, 2015 onClear all
Model year

2023 Chevrolet Suburban 1500

SUV, gasoline, 4WD/4-Wheel Drive/4x4, built in United States. Owner complaints on file from Jun 12, 2024 to Feb 11, 2025.

Recall campaigns covering this model year1450k vehicles or units across those campaigns
Owner complaints17Close to the median 2023 suv
Severity index0.02023 suvs average 6.9
First 24 months1Complaints in its first two years
Complaints over time

Complaints about the 2023 Chevrolet Suburban 1500 peaked in 2025, with 9 filed

Owner complaints about this model year, by the year they were filed with NHTSA.

02.557.5102024202592026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

59% of complaints about the 2023 Chevrolet Suburban 1500 name engine and cooling

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

Engine and cooling
10
Powertrain
4
Electrical system
3
Fuel system
3
Brakes
2
Structure
1
Speed control
1
Visibility and wipers
1
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

One recall campaign covers the 2023 Chevrolet Suburban 1500

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2023 Chevrolet Suburban 1500
CampaignFiledSubjectComponentVehiclesRemedy
24V-674Sep 12, 2024Electronic brake control module software may fail to display a warning light when a loss of brake fluid occursBrakes449,671Software update
Source: NHTSA ODI recalls file.
Owner complaints

What owners reported about the 2023 Chevrolet Suburban 1500

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

17 complaints on file, page 1 of 1.

  1. Filed Feb 11, 2025Failure Feb 1, 2025Magnolia, TXElectrical system, Engine, Service brakes

    1/10/25 Complete braking system failure, could no brake, could not use emergency brake. Almost crashed into my garage -Chevy Service Dept. replaced Electronic Braking Control Module 1/24/25 Complete braking system failure, could no brake, could not use emergency brake -Chevy Service Dept. replaced battery 2/1/25 Car shaking terribly, my kids screaming we were going to “explode” , car smoking, white smoke coming from exhaust -Chevy Service Dept. states there is an engine issue, they will need to break down and replace parts / repair

    NHTSA complaint 11641893
  2. Filed Feb 7, 2025Failure Jan 9, 2025Middletown, DEEngine, Fuel/propulsion system

    Wife is RN at a trauma hospital going to work in the morning on a busy highway. While in front of Hospital truck started to indicate to hit starter button. Truck was already running! Wife stopped at red light. Truck stopped running would not start. Stuck in middle of morning rush hour traffic had to have truck towed to dealership. At the dealership they indicated they found metal parts in the oil pan. They indicated a further look into the engine indicated it was beyond repair and had to be replaced. Truck only had 42k miles on it. They stated they had another one same situation in the shop as well and that it would take several weeks to repair. I have learned that this is a major problem with this make and model and engine. Engine quit with no warning in middle of major highway. Thank god not in an intersection or freeway.

    NHTSA complaint 11641302
  3. Filed Feb 3, 2025Failure Jan 28, 2025Dunlap, ILEngine

    I was driving the vehicle at approximately 45 mph when the vehicle suddenly had no engine power. There were no warning signals or symptoms of an issue that would indicate there was a problem, but the dashboard told me the vehicle needed a restart. I was able to pull the vehicle out of traffic at a cross street and coast to a stop in a parking lot. Had I not been where I was at the moment when the engine failed, or had there been oncoming traffic that would have required me to stop coasting, I would not have been able to pull safely out of traffic. The vehicle was towed to the dealer where it was purchased. They told me the next day that is was an internal engine failure.

    NHTSA complaint 11640343
  4. Filed Jan 22, 2025Failure Apr 7, 2024Moyock, NCEngine

    On April 7th 2024 we were traveling on vacation 2 1/2 hours from home and our vehicle started making a ticking noise and traction control, engine light, service emissions, and front collision warning all came on. It was idling very rough. We had to stop for the night with our kids and take it to the closest dealer the next morning. They diagnosed the car and confirmed that the lifters needed repair. We had to leave our vehicle and get a rental to make it back home. The dealer made repairs and sent vehicle back to us. Fast forward to 1/15/25 I was on the way to work and the same thing started happening. I then had to tow the vehicle to the dealership and they have diagnosed it with the same issue on the other side of the engine. As a brand new vehicle this should not be happening. Each time we were stranded with kids and without a vehicle for a long period of time.

    NHTSA complaint 11637730
  5. Filed Jan 21, 2025Failure Oct 13, 2024Virginia Beach, VAEngine

    Engine died without warning on interstate. Vehicle was towed to Chevrolet dealer where defective rod bearings were found. Engine was replaced by dealer.

    NHTSA complaint 11637479
  6. Filed Jan 19, 2025Failure Dec 27, 2024Basking Ridge, NJEngine

    While driving my family home from our christmas vacation on the Garden State Parkway (NJ) the engine shut off and would not restart. This happened on a stretch of the highway with no shoulder while traveling at 65mph. Thankfully we were able to coast far enough to a section of highway with a shoulder. This incident left my [XXX] , [XXX] , my wife and I and our dog stranded in the freezing cold 100 miles from home. After a stressful next few days the Chevrolet dealership diagnosed it as blown bearings in the motor. It has now been over three weeks and no word from GM when a new motor will be available. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11636860
  7. Filed Jan 18, 2025Failure Jan 2, 2025Bethlehem, CTEngine, Power train

    When traveling at highway speeds our vehicle suddenly lost all engine power. Driving in the passing lane of [XXX] at 75 mph our 2023 Chevrolet suburban RST 6.2 lost all engine power and went into neutral. We were barely able to make it over to the right breakdown lane without getting hit and making it with no power. We were stranded on the busy interstate for three hours with my wife and three young kids in a very dangerous location. They were scared and because we barely made it into the breakdown lane and so close to speeding traffic had to stand outside of the vehicle close to the woods further from dangerous traffic. The Suburban was flatbedded to nearest Chevrolet dealer where we were told the engine was seized and would need to be totally replaced. We were lucky to be alive but now stranded 1000 miles away from home as we were returning from a vacation in Florida. The sudden lose of all engine power traveling on the highway with our entire family was both scary and dangerous. The suburban has now been in the shop for three weeks with no date in sight to be ready and 1000 miles away. This was a truly dangerous situation and thankfully we came out unscathed but I fear someone else may experience the same type of failure and not be so lucky. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11636839
  8. Filed Jan 17, 2025Failure Jan 1, 2025Oviedo, FLEngine

    On January 1st driving east bound on road 520 in central florida. I was driving around 65mph when the vehicle suddenly shut off. The displayed showed a warning saying that something of the sort that I needed to press the brake to start the engine even though I was driving normally. I had to coast to the side of the road and I pressed the brake. once the brake was engaged the vehicle immediately went to park and will not start. I press the ingition button and the screen would go blank and no sound or warnings were displayed. I had to call the police to provide a safety as the vehicle was in a very dangerous area and all my family was on the vehicle. the police laid down flares and I contacted a tow truck using onstar. Onstar was unable to communicate with the vehicle to diagnosed the issue and no warnings or errors were displaying. The vehicle was towed to Carl Black Chevrolet of Orlando Florida. The dealer stated that the engine is locked (L87) and was not able to turn, therefore the vehicle does not start. The dealership technicians have informed that the vehicle needs a new engine and GM needs to approved, the vehicle is still under warranty and I've contact GM and until today, 17 days later, GM has not responded or allowed the dealership to fix my vehicle.

    NHTSA complaint 11636670
  9. Filed Jan 3, 2025Failure Dec 19, 2024Tucson, AZPower train, Vehicle speed control

    While driving our 2023 Chevrolet Duramax diesel suburban, I was waiting, at a complete stop, against the median to make a U turn. When the traffic cleared, I began the turn when I suddenly noticed a nearly complete loss of power, hesitancy of engine engagement, and little response to the gas pedal being depressed. Then an error message appeared on the dashboard stating "Low acceleration warning". There was very little acceleration power available. The rear wheels seemed to spin. I was perilously endangered while making a U-turn across lanes because of this loss of power. The vehicle was then taken immediately to our local Chevrolet dealer who diagnosed a error code message (P0700, 0747) related to transmission valve and injectors. We are very concerned that this was a dangerous occurrence and should be further investigated. We have a 30-year history of Suburban ownership, however this is our first diesel model. We have never had problems of this significance, or seen this error message before. Since this diesel Suburban is nearly new, we are particularly concerned about the durability and safety of this vehicle. Please see attached servive report. The AC compressor was also failed and replaced

    NHTSA complaint 11633963
  10. Filed Nov 10, 2024Failure May 17, 2024Crozet, VAFuel/propulsion system, Power train

    DEF sensor has failed and required placement. Required three visits to the dealer to get them to address it (Grayling, MI, White Lake, MI and Charlottesville VA). Transmission throttle body failed and required replacement. Took 2 visits to get it addressed.

    NHTSA complaint 11624410
  11. Filed Oct 28, 2024Failure Oct 28, 2024Rosemead, CAEngine

    The 2023 Chevy Suburban has a serious oil burning problem. It starts burning oil after 20,000 miles. It starts burning oil after 50,000 miles. Many people around me have this problem. Why is there no recall?

    NHTSA complaint 11622373
  12. Filed Oct 14, 2024Failure Oct 13, 2024Virginia Beach, VAEngine

    While driving on interstate, vehicle's engine turned off and transmission switched to neutral without warning. Vehicle was stopped and immobilized with no ability to shift or start.

    NHTSA complaint 11619593
  13. Filed Oct 10, 2024Failure Oct 10, 2024Lincoln, NEService brakes

    Failed break fluid detection

    NHTSA complaint 11619220
  14. Filed Sep 30, 2024Failure Sep 9, 2024Inman, SCFuel/propulsion system

    The fitting on the fuel pressure regulator on the engine began to separate from the housing and started spraying fuel all over the firewall and the fuel ran down the firewall onto the exhaust pipes. No check engine light signaled. The only way I knew that it was spraying, was I started to smell raw fuel through the air conditioning vents. Luckily I was able to get it to a dealer before any fuel caught fire. The dealer repaired it but GM stuck me with half of the bill for the repair. I have pictures of the failed part if necessary. This is extremely dangerous to anyone that may not pay attention to car issues unless a check engine light comes on.

    NHTSA complaint 11617210
  15. Filed Sep 11, 2024Failure Sep 1, 2024Belmont, NCElectrical system, Body

    The windows would go down all by themselves and not roll up . The infotainment system will flash on and off telling you to start strip all by itself. The door locks will lock you out and in not letting unlock the truck . The key fob is the only way to unlock it. I have taken it to the dealer five times to be repaired and they say GM software is not capable of finding the electrical problem. They just keep replacing parts. I filed a complaint with The State AG office and GM said they were not going to address the complaint because the vehicle was still under warranty.

    NHTSA complaint 11613930
  16. Filed Sep 9, 2024Failure Sep 7, 2024Bala Cynwyd, PAVisibility/wiper

    The wipers have stopped working on a least 6 different occasions. I have to pull over immediately due to not being able to see out the windshield. I try adjusting the switch through all the settings. I shut off the engine and restart the truck. I also turned off the rain sense function on the vehicle settings. Nothing I do will get the wipers working again. I have to wait for the rain to slow down to try to get to my destination. While I continue to drive, the wipers will start working again after about 15 or 20 minutes. The first time this occurred, they were only out for around 30 seconds before they started working again. It seems each occurrence is taking longer for the wipers to come back on. I took the vehicle to Armen Chevrolet of Ardmore on 08/05/2024 for service. They were not able to duplicate the problem. I was told to bring the truck back while the wipers are not working. That is a problem since this only happens intermittently. I fear for my safety and others if this happens at high speeds on a highway in heavy rain. I have another appointment on Monday 09/16/2024 to have diagnose the problem again.

    NHTSA complaint 11613381
  17. Filed Jun 12, 2024Failure Jun 7, 2024Artemas, PAElectrical system, Power train

    I recently took my 2023 Chevrolet Suburban in to make sure everything was working properly with the power train... it has been having bucking and stuttering between 15-45mph, which was super concerning to me, as I am transporting 3 children [XXX]. I took in yesterday, and was called back today to confirm that the issue is happening... the problem is that instead of Chevrolet recalling these vehicles to have this computer issue taken care of... they did an update and are charging their clients to have this update done. This is a serious safety hazard, especially for families like mine that cannot afford to have this update done. I will likely have to drive around without having it done, all because of GM's greediness. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11593901
Source: NHTSA ODI complaints file.
Investigations

1 NHTSA investigation on file

  • PE25001 Preliminary evaluation, Engine and cooling
    Loss of motive power due to engine failure
    Opened Jan 16, 2025, closed Oct 23, 2025 · led to a recall
Source: NHTSA ODI investigations file.
Service bulletins

610 manufacturer communications cover this model year

Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.

  • PIT5698F Sep 26, 2026 · Service Bulletin/Repair Instructions
    This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
  • PIT6545A Sep 15, 2026 · Service Bulletin/Repair Instructions
    This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly.
  • PIC6629F Sep 10, 2026 · Service Bulletin/Repair Instructions
    This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
  • PIT6545 Sep 3, 2026 · Service Bulletin/Repair Instructions
    This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly. Do not replace parts. Eng…
  • PIP4902W Sep 4, 2026 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • PIT5869B Aug 26, 2026 · Service Bulletin/Repair Instructions
    This PI provides a diagnostic tip when fuse F4DR is opening and dealerships are to inspect the wiring at the center console lid.
  • PIC6551C Aug 20, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
  • PIT6110K Jul 28, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
  • PIT6446A Jul 24, 2026 · Service Bulletin/Repair Instructions
    This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.
  • PIT5099J Jul 21, 2026 · Service Bulletin/Repair Instructions
    PI to help diagnose A/C concern
  • 662.10 Jul 16, 2026 · Over The Air
    • Improves transmission diagnostic software. • Reduces unnecessary check engine light activations.
  • PIT5966F Jun 23, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
  • PIT6132E Jun 9, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.
  • PIT6477C Jun 5, 2026 · Service Bulletin/Repair Instructions
    This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool
  • PIT6519 May 27, 2026 · Service Bulletin/Repair Instructions
    This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is available.
  • PIC6602X May 19, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
  • PIT6209J May 15, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates recovery procedure after return to dealer message.
  • PIT6222A May 15, 2026 · Service Bulletin/Repair Instructions
    This PI is to inform the techs to check for binding in the mode door pivot.
  • PIC6540J May 14, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers a procedure to reset the radio.
  • PIT6406K May 14, 2026 · Service Bulletin/Repair Instructions
    This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
  • PIC6540H May 11, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers a procedure to reset the radio.
  • PIC6423A May 11, 2026 · Service Bulletin/Repair Instructions
    Pi created to provide GM dealers with information on gathering information for projection issue
  • PIC6551B May 11, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
  • PIT6193B May 8, 2026 · Service Bulletin/Repair Instructions
    PI created to provide dealer technicians with procedures for updating Google Maps.
  • PIC6630B May 8, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers steps to follow to recover an IOK radio.
  • PIC6629E May 8, 2026 · Service Bulletin/Repair Instructions
    This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
  • PIT6406H May 4, 2026 · Service Bulletin/Repair Instructions
    This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
  • PIC6540G Apr 30, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers a procedure to reset the radio.
  • PIC6540G Apr 30, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers a procedure to reset the radio.
  • PIT6406G Apr 24, 2026 · Service Bulletin/Repair Instructions
    This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
  • PIC6602U Apr 30, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
  • PIC6629D Apr 23, 2026 · Service Bulletin/Repair Instructions
    This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
  • PIT3271Q Apr 1, 2026 · Service Bulletin/Repair Instructions
    This preliminary information communicates information about how to determine if a wheel and tires size change is available.
  • 661.10 Mar 26, 2026 · Over The Air
    • Fixes to help prevent false Service Driver Assist System messages. • Improvements to connectivity for OnStar.
  • PIT6347B Mar 26, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with ABS SES MIL / Service Brake System / Service StabiliTrak / BSCM DTC P0606 P0562 and dealers to perform additional battery and connection testing.
  • PIT6110J Mar 9, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
  • PIP6104 Mar 9, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
  • PIP4902V Mar 9, 2026 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • PIC6602T Mar 6, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
  • PIT6209H Mar 2, 2026 · Service Bulletin/Repair Instructions
    This PI communicates information informing dealers that Engineering is aware of the clunk noise and is currently investigating a root cause.
  • PIT6425D Mar 2, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
  • PIC6629C Mar 5, 2026 · Service Bulletin/Repair Instructions
    This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
  • PIC6602S Feb 27, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
  • PIT6415A Feb 19, 2026 · Service Bulletin/Repair Instructions
    PI to explain normal operation for a concern that the outside rearview mirrors may not fold when the doors are locked, due to the personalization settings for Auto Door Unlocking.
  • PIT6456D Feb 20, 2026 · Service Bulletin/Repair Instructions
    This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
  • PIC6602R Feb 7, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
  • PIT6456C Feb 3, 2026 · Service Bulletin/Repair Instructions
    This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
  • PIT5985K Jan 27, 2026 · Service Bulletin/Repair Instructions
    This PI provides diagnostics tips to dealership techs when trying to diagnose a CAN Bus communication issue after an event like a lightning strike, battery jump started backwards, failure over the air update, etc.
  • PIT6456B Jan 29, 2026 · Service Bulletin/Repair Instructions
    This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
  • PIT5907E Jan 23, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates a issue where the park assist module can set current communication dtc's due to a timing issue and it may have nothing related to the customers complaint. A software update will be available to repair these flase DTC's
  • PIT6406E Jan 21, 2026 · Service Bulletin/Repair Instructions
    This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
  • PIT6456A Jan 20, 2026 · Service Bulletin/Repair Instructions
    This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
  • PIP6098 Jan 14, 2026 · Service Bulletin/Repair Instructions
    This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
  • PIT6425C Jan 16, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
  • PIT5993F Jan 15, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with high resistance in the glass breakage loop that could cause a dead battery or unwanted theft alarm. Dealers are to inspect the glass breakage loop.
  • PIT6344A Jan 15, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates an issue with blower motor speed changing when air flow is blocked by snow.
  • PIT6457B Jan 12, 2026 · Service Bulletin/Repair Instructions
    This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
  • PIT6369B Jan 10, 2026 · Service Bulletin/Repair Instructions
    This Preliminary information communicates to dealership technicians to perform the reset for the 2 modules noted above.
  • PIP4902U Jan 8, 2026 · Service Bulletin/Repair Instructions
    This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
  • PIT5828E Jan 7, 2026 · Service Bulletin/Repair Instructions
    This Preliminary Information communication provides information to the technician about customers that may request the factory Integrated Trailer Brake Controller Regular Production Option Code (JL1) be installed on their Full-Size Pickup or SUV when the ve…
Source: NHTSA manufacturer communications files.