NHTSA ID Number: 10202399
Manufacturer Communication Number: PIT5854
Summary
This Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being installed on the vehicle.
Condition
Some customers may comment on a Service Leveling System/Speed Limited message on DIC. Dealers may find no DTC’s present.
Cause
This could be caused by incorrect vehicle ride height variance due to an aftermarket lowering kit installed.
4 Affected Products
Vehicles
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5854
Published date: 09/21/2021
MC-10202399-9999.pdf 1397.865KB
- [Fitment] for GM SUV 2007-2020. for Chevy
Tahoe/Avalanche/Suburban, for GMC Yukon/Denali/Yukon XL, for Cadillac Escalade/Escalade EXT - [Strong Steel] High-strength steel drop coil springs and shock extenders have a great powder coating keeping this item from rust and corrosion for an extended lifespan
- [Reduce Ground Clearance] Drop kit provides 4 inches of rear lowering, effectively reducing suspension travel
- [Performance Improvement] Lowers center of gravity for better handling, improved cornering, and reduced wind resistance
- [Premium Service] 1-year limited warranty for quality issues (from purchase date) and lifetime technical support. We are committed to providing high-quality products. For more information, contact us anytime
- [2007-2014] for Chevy Tahoe/Suburban 2WD/4WD; for GMC Yukon/Yukon XL 2WD/4WD; for GMC Denali/Cadillac Escalade 2WD/4WD/AWD
- [Durable Materials] Crafted from high-quality steel, our lowering kit keeps long-lasting durability and strength. The black powder coat finish not only adds a sleek look but also protects against rust and corrosion, making it suitable for weather conditions
- [Shock Extender] Helps to provide adequate suspension travel and prevent bottoming out. This ensures a smoother ride and improved handling, even after lowering your vehicle
- [Great Look] Provides 2" front and 4" rear drop length to give your vehicle a greater appearance and improve handling
- [24/7 Customer Support] maXpeedingrods offers lifetime technical support and 1-year limited warranty for quality-related issues since the date of purchase. Feel free to contact us if you have any questions
- [Fitment] for Chevy Tahoe/Suburban 2WD/4WD 2007-2014, for GMC Yukon/Yukon XL 2WD/4WD 2007-2014, for GMC Denali & for Cadillac Escalade 2WD/4WD/AWD 2007-2014
- [4” Rear Drop] Made from high-quality steel for superior durability, maintains a comfortable ride quality. These coil springs allow for the lowering of your vehicle 4" in the rear
- [Enhanced Style & Performance] Give your vehicle a cool look and increase your vehicle's performance and stability
- [Package Includes] 2x Rear Drop Coil Springs, 2x Rear Shock Extenders. Spring length: Drive Side=300mm/11.81", Passenger Side=320mm/12.59". Spring rate: 4.5 kg/mm(251.98lb/inch)
- [Premium Service] 1-year limited warranty for quality issues (from purchase date) and lifetime technical support. We are committed to providing high-quality products. For more information, contact us anytime
- [Fitment] for GM SUV 2007-2020. for Chevy Tahoe/Avalanche/Suburban, for GMC Yukon/Denali/Yukon XL, for Cadillac Escalade/Escalade EXT
- [Strong Steel] High-strength steel drop coil springs and shock extenders have a great powder coating keeping this item from rust and corrosion for an extended lifespan
- [Reduce Ground Clearance] Drop kit provides 2 inches of rear lowering, effectively reducing suspension travel
- [Performance Improvement] Lowers center of gravity for better handling, improved cornering, and reduced wind resistance
- [Premium Service] 1-year limited warranty for quality issues (from purchase date) and lifetime technical support. We are committed to providing high-quality products. For more information, contact us anytime
- Available with or without shocks
- Specifically made for your vehicle with guaranteed fitment
- OEM ride quality with added performance, control and comfort
- Premium hardware along with detailed instruction to insure you'll get the job done right the first time
Last update on 2026-05-27 / Affiliate links / Images from Amazon Product Advertising API
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Bulletin No.: PIT5854 Published date: 09/21/2021 Preliminary Information PIT5854 Service Leveling System/Speed Limited Message Due to Aftermarket Modifications Models Brand: Cadillac
Chevrolet Chevrolet GMC Model: Escalade Suburban Tahoe Yukon Model Years: 2021 2021 2021 2021 VIN: from to All All All All All All All All All All All All Engine: All All All All Transmissions: The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Involved Region or Country North America Additional Options (RPO) F47 Condition Some customers may comment on a Service Leveling System/Speed Limited message on DIC. Dealers may find no DTC’s present. Cause This could be caused by incorrect vehicle ride height variance due to an aftermarket lowering kit installed. Correction: Inspect for vehicle ride height being altered by performing the Trim Height Inspection (example Document ID # 5568651.) These lowering kits can cause premature wear to the air suspension components, tires, CV Joint, and also affect headlamp aiming. Vehicle Ride Height lowered Note: Decreased distance between top of tire and fender well. If the suspension has been found to be lower than factory settings, inspect for aftermarket adjustable suspension height sensor links being installed. Factory suspension height sensor links are not adjustable. As shown below: Aftermarket Adjustable suspension height sensor links. As shown below: Aftermarket Adjustable Height Sensor Linkages incorrectly adjusted side to side. Aftermarket Adjustable Height Sensor Link not secured properly, preventing accurate height sensor readings. Notice Angle or Rear Axle Drive Shaft due to suspension being lowered. Warranty Information Any concerns or damage that occurs as a result of vehicle modification may not be covered under the Terms of the New Vehicle Limited Warranty. Reference the latest version of TSB 09-00-89-016 (Warranty Administration – Labor Operation 0600014 – Suspected Tampering or Vehicle Modifications) if needed. Version History Version 1 Modified 09/21/2021 – Created on.
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