NHTSA ID Number: 10185732
Manufacturer Communication Number: PIT5386F
Summary
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. On trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant. Technician will reroute the harness and plug it in.
30 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
CHEVROLET | SILVERADO 1500 | 2014-2021 |
| CHEVROLET | SILVERADO 2500 | 2015-2021 |
| GMC | SIERRA 1500 | 2014-2021 |
| GMC | SIERRA 2500 | 2015-2021 |
Condition / Concern
Backup alarm is inoperative. Trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5386F
Published date: 12/14/2020
NHTSA ID Number: 10144462
Manufacturer Communication Number: PIT5386D
Summary
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. On trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant. Technician will reroute the harness and plug it in.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5386D
Published date: 08/20/2018
MC-10144462-9999.pdf 476.774KB
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5386A
Published date:
- HIGH SOUND LEVEL: MIRKOO backup alarm can make a powerful beeping sound that is 110dB(±3dB). Nobody will ignore this beeping sound when you are reversing vehicle.
- PREMIUM QUALITY: MIRKOO backup alarm is made from premium quality materials to ensure durability and longevity. High decibel, good sound quality, low current, and long lifespan. It can work in a variety of temperature environments, no matter you are in Florida or Alaska.
- EASY TO INSTALL: Our backup alarm is very easy to install, you just need to splice a wire from the positive screw terminal to the power wires of the reverse light or a reverse switch installed on the dashboard, then splice a wire to the ground(Negative wire).
- UNIVERSAL FIT: MIRKOO backup alarm is designed to work on 12-80 Volt DC vehicles. It will automatically adjust to a voltage range of 12-80 volt vehicles. Including Trucks Vans Freight Vehicles Cars Lorries SUV.
- Manufacturer sales
- HIGH SOUND LEVEL: MIRKOO backup alarm can make a powerful beeping sound that is 110dB(±3dB). Nobody will ignore this beeping sound when you are reversing vehicle.
- PREMIUM QUALITY: MIRKOO backup alarm is made from premium quality materials to ensure durability and longevity. High decibel, good sound quality, low current, and long lifespan. It can work in a variety of temperature environments, no matter you are in Florida or Alaska.
- EASY TO INSTALL: MIRKOO backup alarm is very easy to install, you just need to splice a wire from the positive screw terminal to the power wires of the reverse light or a reverse switch installed on the dashboard, then splice a wire to the ground(Negative wire).
- UNIVERSAL FIT: MIRKOO backup alarm is designed to work on 12-80 Volt DC vehicles. It will automatically adjust to a voltage range of 12-80 volt vehicles. Including Trucks Vans Freight Vehicles Cars Lorries SUV.
- [Upgrade protection capabilities] Backup alarm Made of high quality nylon Material + Waterproof housing with epoxy embedded electronics, excellent waterproof and dustproof capability, up to IP67 level, can work persistently in temperatures and environments ranging from -30 to 80 degrees Celsius.
- [High Sound Level ]Back-up alarm for turck warning horn produces a Powerful Beeping Sound that is 110(±3dB) Decibel,Nobody will ignore this beeping sound when you are reversing vehicle.helps to catch other driver's and pedestrian's attention even over great distances immediately.
- [Compatibility] Universal for 12V- 48V heavy-duty vehicles and commercial use,best for trucks, vans, buses, pickups, forklifts, semi-trailers, RV's, construction vehicles,excavators,construction machinery,special vehicles,parking and a variety of large vehicles container vehicles.Universal Mounting Bracket with Slotted Holes,can be Mounted Many Place in your Vehicle.
- [Easy Installation]Splice a wire from the positive screw terminal to the power wires of the reverse light or a reverse switch installed on the dashboard, then splice a wire to the ground(Negative wire). It can be Protective when Connect the Wire Inversely or Wrong.Reverse polarity protected backing up horn and activation when reverse lights are on.
- If you have any questions about our products, please message us before your purchasing. If you have any problems with the products you received, please contact us in time, we will serve you wholeheartedly!
- 【12V-48V DC UNIVERSAL VOLTAGE】– Wide-Range Fleet Compatibility Automatically adjusts to 12V, 24V, and 48V DC systems. Fits semi-trucks (Freightliner, Volvo, Peterbilt), forklifts (Toyota, Crown), RVs, Mercedes Metris vans, dump trucks, and heavy construction equipment. Simplifies fleet inventory with a single SKU for mixed-voltage environments.
- OSHA & SAE J994 COMPLIANT 107dB ALERT】– Super Loud & Clear Warning Produces a piercing 107dB "beep-beep" tone that exceeds ANSI/OSHA standards for industrial safety. Clearly audible over loud diesel engines and noisy job sites to prevent accidents, meeting FMVSS 393.80 and SAE J994 Type A requirements.
- 【HEAVY-DUTY IP67 WATERPROOF HOUSING】– Built for Harsh Environments Features a fully sealed, epoxy-potted electronic module and rugged ABS housing rated IP67 (dustproof and waterproof). Withstands high-pressure washdowns, extreme temperatures (-40°F to 185°F), and harsh weather conditions.
- FLEET-READY DURABILITY】– Vibration & Rust Resistance Includes a corrosion-resistant stainless steel mounting bracket (not cheap zinc-plated). Engineered to pass MIL-STD-810G vibration tests, ensuring a long service life on rough terrain and heavy-duty chassis without failure.
- 【EASY 2-WIRE INSTALLATION】– Plug & Play in Minutes Simple 2-wire connection (positive to reverse light circuit, negative to ground). No relay or resistor needed. Universal bracket allows vertical or horizontal mounting on frame or bumper. Includes hardware and decal.
SEOCONTENT-START
Bulletin No.: PIT5386F
Published date: 12/14/2020
Preliminary Information
PIT5386F Back Up Alarm Inoperative and needs to be Connected During PDI
Product Investigation Review Required
Models
| Brand: | Model: | Model Years: | VIN: | Engine: | Transmissions: | |
| from | to | |||||
| Chevrolet |
Silverado 1500 | 2014 – 2021 | All All All | All | ||
| Chevrolet |
Silverado 2500/3500 | 2015 – 2021 | All | All | All | All |
| GMC | Sierra 1500 | 2014 – 2021 | All All All | All | ||
| GMC | Sierra 2500/3500 | 2015 – 2021 | All | All | All | All |
Supersession Statement
This PI was superseded to update the model years and Correction. Please discard PIT5386E.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
During the PDI it may be noticed that the backup alarm is inoperative. Trucks equipped with the Back Up Alarm (RPO 8S3), the alarm will be intentionally left disconnected from the assembly plant.
Recommendations / Instructions
- For 2020/2021 3500 Chassis Cab models (31003, 31043, and 31403) the back up alarm is not installed on the truck’s frame and it has been left loose inside the cab from the assembly plant. It is the up tters responsibility to mount the back up alarm and splice into the reverse circuit. The labor op listed below does not apply to these vehicles because no additional work is needed during PDI.
- For All Other Trucks, the alarm is located on the right rear of the frame, and the chassis harness alarm connector is located on the left rear of the frame. Route the harness up and over the spare tire hoist tube and connect to the backup alarm.
- Back Up Alarm/Connector
- Chassis Harness Alarm Connector
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
| Labor Operation | Description | Labor Time |
| 0590032 | PDI – Dealer Installed – Factory Invoiced Options | Use Published Labor Operation Time |
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Additional SI Keywords
backup reverse shift
SEOCONTENT-END
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