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 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
- [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
- 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
- Compatible with 2007-2016 Chevy Silverado 1500 and GMC Sierra 1500 Extended Cab and Crew Cab models equipped with factory cast steel control arms
- Designed to provide an approximate 4-inch front drop and 6-inch rear drop for compatible GM 1500 trucks
- Front components include upper and lower drop control arms, Delrin control arm bushings, ball joints, 1-inch rubber isolators, shorter sway bar links, and strut spacers
- Rear components include flip kit, 1-inch lift shackles, and nitrogen-charged drop shocks for the rear suspension setup
- Upper control arms help with camber adjustment after lowering, and rubber isolators allow adjustment from an approximate 5-inch front drop to an approximate 4-inch front drop
- 【OE Part Number】9161988
- 【Perfect Fitment】Fits for 1978-1988 G-Body cars and 1982-2004 S10 two wheel drive (2WD) trucks; Fits for 1978-1988 Chevy Monte Carlo, 1978-1983 Chevy Malibu, 1978-1987 Chevy El Camino, 1982-2003 Chevy S10 Pickup, 1983-2004 Chevy S10 Blazer, 1978-1987 GMC Caballero, 1983-2001 GMC S15 Jimmy, 1982-1990 GMC S15 Pickup, 1991-2003 GMC Sonoma, 1978-1988 Buick Regal, 1978-1988 Buick Grand National, 1978-1988 Oldsmobile Cutlass, 1978-1987 Pontiac Grand Prix, 1978-1981 Pontiac Le Mans.
- 【High quality Material】 9161988 Tubular Upper & Lower Control Arm Kit is made of high-quality materials, which is strong and durable, not easy to damage, has strong impact resistance, stable performance and long service life, bringing you a good use experience.
- 【Easy to Install】The 9161988 front Tubular Upper & Lower Control Arms is precision designed and rigorously tested to meet original factory specifications, matches the function of the original spare parts, which can be easily installed and directly replaced.
- 【Package Included】2x Front upper control arms and 2x front lower control arms.（as picture show）
Last update on 2026-07-01 / 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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