NHTSA ID Number: 10183194
Manufacturer Communication Number: 20NA177
Summary
This technical bulletin provides repair information to correct a customer concern of the loss of air pressure causing rear air suspension bags not to inflate.
Parts Information
| Causal Part | Description | Part Number | Qty |
| X | VALVE ASM,RR AIR SUSP LVLG | 19407966 | 1 |
SEOCONTENT-START
Copyright 2020 General Motors
LLC. All Rights Reserved.
Service Bulletin Bulletin No.: 20-NA-177
Date: October, 2020
TECHNICAL
Subject: Loss of Air Pressure Causing Rear Air Suspension Bags Not to Inflate
Brand: Model:
Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet Silverado 4500HD,
5500HD and 6500HD 2019 2020 All All
Involved Region or Country North America,
Additional Options (RPOs) GP1 – 13,500 Rear Air Suspension, GP8 – 15,500 Rear Air Suspension, G40 – 19,000
Rear Air Suspension
Condition Some customers may comment on the rear air suspension bags deflating and not reinflating.
Cause The cause of the condition may be the air spring leveling valve gasket fails, causing a
large air leak.
Correction Upon confirming the Condition, replace the rear air suspension leveling control valve.
Refer to Rear Air Suspension Leveling Control Valve Replacement, in SI.
Parts Information
Causal
Part
Description Part
Number
Qty
X VALVE ASM,RR
AIR SUSP LVLG
19407966 1
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation Description Labor Time
8000510 Rear Air Suspension Leveling Control Valve Replacement Use Published Labor
Operation Time
Version 1
Modified Released October 23, 2020
GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
WE SUPPORT VOLUNTARY
TECHNICIAN
CERTIFICATION
SEOCONTENT-END
2 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| CHEVROLET | SILVERADO 4500HD | 2019-2020 |
1 Associated Document
Manufacturer Communications
MC-10183194-9999.pdf 494.492KB
- Vehicle Compatibility - RETRUE Air bags rear suspension kit for 2011-2026 Chevrolet Chevy Silverado 2500HD 3500HD, GMC Sierra 2500HD 3500HD 2WD 4WD, perfect replacement for the Firestone Ride-Rite 2613 kit
- Air Ride Suspension Kit - Offering an impressive load-leveling capacity of up to 5,000 pounds, increase spring rate more effectively than traditional or original, reduce the amount of shock and vibration, improve vehicle stability to provide a safer and more comfortable ride
- Effortless Installation - Our air spring bag kit features pre-drilled holes and no drill required, ensuring a hassle-free installation process. With included comprehensive instructions and labeled parts, just turn on some tunes and have a blast with the install. Tips: automated tools will speed it up
- Customized Air Pressure - Allows you to fine-tune the air bags pressure from 5 to 100 psi, levels vehicle front-to-rear and side-to-side for optimal balance and ride comfort
- Reliable Customer Support - At RETRUE, customer satisfaction is our top priority. Rest assured that we stand behind our products with unwavering confidence. If you have any questions or concerns, our dedicated support team is here to assist you every step of the way. Your satisfaction is guaranteed.
- Vehicle Compatibility - RETRUE Air bags rear suspension kit for 2007 to 2018 Chevy Silverado 1500 and GMC Sierra 1500 2WD 4WD (Not High Country and Not Denali models, Year 2015-2018), 2019 Silverado 1500 Light Duty "LD" Model Only, perfect replacement for the Firestone Ride-Rite 2430 kit
- Air Ride Suspension Kit - Offering an impressive load-leveling capacity of up to 5,000 pounds, increase spring rate more effectively than traditional or original, reduce the amount of shock and vibration, improve vehicle stability to provide a safer and more comfortable ride
- Effortless Installation - Our air spring bag kit features pre-drilled holes and no drill required, ensuring a hassle-free installation process. With included comprehensive instructions and labeled parts, just turn on some tunes and have a blast with the install. Tips: automated tools will speed it up
- Customized Air Pressure - Allows you to fine-tune the air bags pressure from 5 to 100 psi, levels vehicle front-to-rear and side-to-side for optimal balance and ride comfort
- Reliable Customer Support - At RETRUE, customer satisfaction is our top priority. Rest assured that we stand behind our products with unwavering confidence. If you have any questions or concerns, our dedicated support team is here to assist you every step of the way. Your satisfaction is guaranteed.
- FEATURE - Air Spring Bag Suspension Kit are a component used in suspension systems, often in place of traditional metal springs. They adjust the height and stiffness of a vehicle's suspension by inflating or exhausting the air to provide a more comfortable ride and better suspension performance. Automotive air springs are commonly used in vehicles such as large trucks, buses, SUVs and high-end sedans.
- MATERIALS - The air spring bag is made of durable rubber material, which is more durable than ordinary gas spring, with better compression and load performance, longer service life, and provide you with a better driving experience after replacement.
- REPLACES OEM NUMBER - TOW-GM9906 Up to 5000 lbs of Load leveling capacity. (Note: Each air spring bags assembly is thoroughly tested to make sure OE fit)
- APPLICABLE MODELS & YEARS - Our air suspension spring bag is compatible with 1999-2007 Chevy Silverado 1500 2WD/4WD, 1999-2007 Chevy Silverado 1500 Classic 2WD/4WD, 1999-2007 GMC Sierra 1500 2WD/4WD, 1999-2007 GMC Sierra 1500 Classic 2WD/4WD. ( NOTE: will not fit trucks that have been lowered any in the rear )
- EASY TI INSTALL - We provide detailed installation instructions with clear steps and a complete list of tools, step-by-step operation can easily complete the installation of air bags for modified cars.
- Also fits 2019 Silverado LD Legacy and Sierra Limited with 68" and 78.8" bed; FITMENT NOTE: Does not fit if vehicle is equipped with MagneRide.
- UP TO 5,000 LBS LOAD-LEVELING CAPACITY: LoadLifter 5000 air springs provide serious support for towing and hauling; eliminates rear-end sag, squat, and bottoming out under heavy loads. Ideal for towing, campers, boats, and work equipment.
- ADJUSTABLE AIR PRESSURE (5–100 PSI): Fine-tune your suspension for any situation; lower pressure for daily driving comfort, higher pressure for maximum support when towing trailers or carrying loads.
- IMPROVES RIDE QUALITY & STABILITY: Reduces bounce, sway, and body roll while improving overall control and comfort. Maintains proper ride height for safer braking, better steering response, and even tire wear.
- EASY TO INSTALL: Most kits use existing holes in frame. Precision-fit design, kit includes all hardware and a fully illustrated installation guide. Compatible with Air Lift compressors and wireless controllers for quick and easy pressure adjustments.
- Upgraded replacement - this air compressor replaces and improves on the original part for certain Cadillac, Chevrolet and GMC vehicles
- Enhanced technology - features advanced thermal protection software to prevent future burn out
- More durable - addition of protective membrane prevents moisture intrusion
- Complete repair - brackets, dryer, air filter boxes, sealed sound isolation shielding, wiring harness and connectors included
- Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle
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