NHTSA ID Number: 10187391
Manufacturer Communication Number: 20NA030
Summary
This service bulletin provides a procedure to correct a customer concern of Rear Air Suspension Inoperative.
1 Affected Product
Vehicle
| MAKE | MODEL | YEAR |
CHEVROLET | SILVERADO 4500HD | 2019 |
Parts Information
| Causal Part | Description | Part Number | Qty |
| X | SPRING, RR AIR | 19407642 | 2 |
| N/A | ABSORBER, RR SHK | 19408176 | 2 |
|
|
SEOCONTENT-START
Service Bulletin Bulletin No.: 20-NA-030
Date: December, 2020
TECHNICAL
Subject: Rear Air Suspension Inoperative
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Chevrolet Silverado 4500HD,
5500HD and 6500HD 2019 2020
Involved Region or Country North America
Additional Options (RPOs)
G40 (SUSPENSION REAR-12,000 LB, AIR)
GP1 (SUSPENSION REAR-13,500 LB, AIR)
GP8 (SUSPENSION REAR-15,500 LB, AIR)
Condition Some customers may comment that the rear of the truck sits low, or air suspension will
not properly inflate.
Cause This condition may be caused by the rear air spring coming off the lower mount when
lifting/removing weight off rear axle.
Correction If it has been verified that the rear air spring has come off the rear mount, replace both
rear air springs and the shock absorbers.
Service Procedure
Refer to Air Spring Replacement in SI.
Refer to Rear Shock Absorber Replacement (With Air
Springs) in SI.
Parts Information
Causal
Part
Description Part
Number
Qty
X SPRING, RR AIR 19407642 2
N/A ABSORBER,
RR SHK
19408176 2
Page 2 December, 2020 Bulletin No.: 20-NA-030
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation Description Labor Time
8000021 Rear Air Spring Replacement – Both Sides Use the Published Labor
8044751 Rear Shock Absorber Replacement – Both Sides Operations Time
Version 1
Modified Released November 30, 2020
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 20-NA-030
Date: December, 2020
MC-10187391-9999.pdf 497.683KB
- 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
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- 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.
- 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
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- 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
- Vehicle Compatibility: RETRUE Air bags rear suspension kit Compatible with 2019 to 2026 Chevy Silverado 1500 2WD 4WD, Silverado 1500 High Country 4WD and GMC Sierra 1500 2WD 4WD, Sierra 1500 Denali 4WD, perfect replacement for the Firestone Ride-Rite 2609 kit (Compatible with Silverado LD or Sierra Limited models use kit RAS2430)
- 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 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.
- Perfect Fitment: Our air suspension kit is designed to fit 1973-1987 Chevy/GMC Pick Up trucks C&R 10, 1500 (2WD only), 1969-2002 Dodge Pickup Trucks D&W 100, 150, 250, Ram 1500 (2WD, 4WD), Ram 2500, 3500 (2WD, 4WD), 1969-1996 **250 Under 8500 GVWR(4x2, 4x4), 1963-2010 **250 Over 8500 GVWR(4x2, 4x4), and 1969-2010 **350.
- Heavy-Duty Load Capacity: Our air springs can handle up to 5000 pounds of load carrying, making it perfect for hauling heavy cargo or towing a trailer.
- Easy Installation: Our air helper springs can be installed on most light trucks, RVs, and vans. The Ride-Rite and Sport-Rite Air Helper Springs are installed between the frame of the suspension, providing load support through the use of air pressure.
- Safe and Reliable: We never recommend exceeding the manufacturer's Gross Vehicle Weight Rating (GVWR) for your safety. Our air suspension kit is designed to provide you with a safe and reliable ride.
- Complete Kit: Our kit includes the item model number: W21-760-2071, mounting hardware, and a 1" rear suspension lift kit, making it a complete package for your convenience.
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