NHTSA ID Number: 10173681
Manufacturer Communication Number: PIT4261F
TSB/Document Date: 2020-04-13
Summary
This Preliminary Information communication provides information to the technician about vehicles with tire sidewall irregularities. This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.?
Bulletin No.: PIT4261F
Published date: 03/9/2020
Preliminary Information
PIT4261F Tire Sidewall Irregularities
Models
Brand:
Model:
Model Years:
VIN:
from
Engine:
to
Transmissions:
Escalade
2007 - 2020
All
All
All
All
Avalanche
2007 - 2013
All
All
All
All
Silverado
2007 - 2020
All
All
All
All
Suburban
2007 - 2020
All
All
All
All
Tahoe
2007 - 2020
All
All
All
All
Sierra
2007 - 2020
All
All
All
All
Yukon
2007 - 2020
All
All
All
All
Supersession Statement
This PI was superseded add the 2019 and 2020 model year. Please discard PIT4261E.
Condition / Concern
Slight sidewall indentations are a common characteristic of radial tire construction. These
indentations are more noticeable on larger size tires having a larger side wall height. Radial
tire body construction includes individual cords that run parallel to each other from bead to
bead (down the sidewall, across the tread and up the other sidewall). These cords will
overlap at points on the circumference of the tire. When the tire is mounted and inflated, it
is free to naturally expand. The overlapped areas may create slight indentations,
undulations, or protrusions since the stretching capacity of the overlapped area is slightly
different than the rest of tire sidewall area.
The following two photo's show examples of tires with a sidewall indentation.
Recommendations / Instructions
This is a visual condition that will not affect durability, reliability or performance of the tires.
Tire replacement to address this condition is not recommended and will lead to customer
dissatisfaction as the replacement tires will likely have the same or similar condition.
Note: Indentations are not to be confused with sidewall bulges. An "outward" sidewall bulge
indicates a spread or broken cord(s). Tires with an "outward" sidewall bulge should be
replaced.
Customer Information
Please communicate to the customer that slight sidewall indentations are a common characteristic of radial tire
construction and will not impact the designed performance or reliability of the vehicle. Please share this
information with the customer, including a copy of this message.
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
alignment blister front pressure rear rotate suspension wear wheel
© 2020 General Motors
. All Rights Reserved.
- 【Perfect Emergency Repair Solution】This kit includes...
- 【Premium Materials for Safe Repairs】Our tire screw plugs...
- 【2 Sizes for Every Puncture】Choose the right size for...
- 【5-Minute DIY Repair】Skip the auto shop and fix flats...
- 【Emergency-Ready Design】Compact & ready for...
Last update on 2026-06-13 / Affiliate links / Images from Amazon Product Advertising API
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: PIT4261F
Replacement Service Bulletin Number:
MFR Communication Date: 2020-03-09
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: TIRES:SIDEWALL
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- 🎉[OTOFIX D1 Lite, Perfect Cost-effective Diagnostic Tool]: OTOFIX D1 Lite, a newest bidirectional scan tool from OTOFIX company, is a great choice for DIYers and repair shops. 👉This obd2 scanner diagnostic tool packs all practical functions: OE level all systems diagnoses, Bi-Directional Control, 38+ reset services fixing 99% of common problems, support DoIP & CANDF protocols and FCA
AutoAuth, high-end hardware configuration. Worldwide vehicles and 🔥2 Years Free Updating🔥 covered. - 🎉[Bi-Directional Scan Tool, Active Test]: OTOFIX D1 Lite bluetooth obd2 scanner can also command ECUs and monitor the operation of the actuators to track down the problems of certain parts, like windows, sunroof, wipers, fuel pumps, etc., saving repair time & trouble. This makes OTOFIX D1 Lite the most cost-effective bidirectional scan tool.
- 🎉[2026 Newest, 38+ Hot Reset Functions]: Equipped with 38+ reset functions in one, the OTOFIX D1 lite automotive scanner diagnostic tool allows you to troubleshoot 99% of common vehicle problems. You can use this car diagnostic scanner holding enough functions to easily repair common vehicle models in your repair shops. Including Oil Reset, Injector Coding, Throttle, DPF Reset, SCR Reset, Gear Learning, Clutch Learning, Suspension, etc. Note* Reset functions vary by model.
- 🎉[OE Level Full Systems Diagnostics]: Unlike the 2-system and 4-system diagnostic tools, the OTOFIX auto scan tool can complete comprehensive system diagnostics within 5 minutes. It accesses and scans all available onboard systems like for Engine /AT /ABS /EPB /BMS /TPMS /SRS /SAS /Audio System /BCM /Air Conditioning / etc., to read & clear codes, view live data, and check ECU information. Note: Active test is not involved.
- 🎉[Powerful Hardware Configuration]: Designed with a fashion appearance & a 7” touchscreen and a weight of 463g, this OTOFIX D1 Lite OBD2 diagnostic scanner scan tool is convenient for everywhere and easy to use & store. Android9.0 OS and 2+64GB memory enhance multi-task smoothness and diagnostic operation, no more wasting too much time. 5800mAh battery allows hours-lasting use. WiFi & VCI1 also bring faster communication for your diagnostics.
- 🏆【2026 TOP OBD2 Scanner Diagnostic Tool】OTOFIX D1 Lite wireless obd2 scanner has upgraded hardware configuration and car coverage. The newly upgraded D1 Lite with 🔥OS Android 9.0🔥1.5Ghz 4 core high efficiency processor🔥2GB RAM+64GB ROM large storage🔥5800mAh large battery, more stable and longer lasting diagnostics🔥 38+ Reset🔥action tests🔥full system diagnostic🔥Supports MV105 endoscope🔥21+ Language Supports🔥100000+ vehicle coverage to meet all your daily maintenance needs.
- 👍【Bi-Directional Control / Active Test】D1 Lite obd2 scanner has bidirectional control(worth $300+), which is the most beloved feature among mechanic. If your headlights or car windows are broken, going to a repair shop will cost a lot of money. You can use D1 Lite to send execution commands to the ECU module and identify the repair status. Such as ABS, car windows, doors, valves, wipers, headlights, etc., effectively shorten diagnostic time and reduce diagnostic costs.
- 🔥【All Systems Diagnostics, In-depth Checking】This advanced OBD2 Scanner D1 Lite can perform OE-level diagnosis of all systems including engine, transmission, airbag, ABS, ESP, TPMS, gateway, steering, radio, and air conditioning for more than 100 brands. This diagnostic scanner supports essential functions, such as reading ECU version info, reading and clearing fault codes, and reading data streams.With just a simple click, it provides you with accurate and in-depth diagnostics.
- 🏆【38+ Reset Hot Functions】For repair workshops, holding an OTOFIX D1 Lite Auto scanner is a strong advantage over others. Its 38+ maintenance functions provide various solutions for all module repairs, including Oil Reset, TPMS Reset, Injector Coding, Suspension, Throttle Matching, etc., which will usher your repair business to a new pinnacle. Continuously updating will never make the functionality & compatibility out-of-date.
- 🏆【150+ Models, 10000+ Car Coverage & 16 Languages】D1 Lite is a comprehensive car diagnostic scan tool, help you to troubleshoot car issues fast for 95% US, European, Asian auto makes. ✅ With frequent updates and optimizations allow D1 Lite to cover more vehicles to meet your needs. ✅ Multilingual menu allows auto mechanics around the world to use it without language barriers. 🚩Note: Kindly send us the S/N of the device to authorize new language updates before changing the menu language.
- 2026 Newest Wireless Bluetooth Scan Tool D1: OTOFIX D1 Diagnostic scanner is upgraded version with Enhanced Hardwares & Newest Functions, FASTER and SMARTER! ✅Alternative Bluetooth 5.0 +USB connect✅2G+64GB✅Android 9.0 OS✅5G & 2.4 GHz Dual WiFi✅5800mAh battery👍VAG Guided Function👍ECU Online Coding👍CANFD&DOIP👍40+ Services👍Bi-Directional Control👍Full Systems Diagnose👍2 Years Free Update👍150+ Vehicle Coverage🎁Contact to get gift: otofixaftersales-amz@ outlook.com
- ECU Coding to Unlock the Hidden Features: OTOFIX D1 obd2 scanner diagnostic tool newly adds ECU Coding which can Online Coding(ONLY for VW/Au.di/Sk0da), Variant Coding/Offline Programming, Flash Hidden Functions, Reset Adaptive Data, Match Replaced Components, Customize OE-Settings. Such as: halogen fog lamps retrofitted with xenon fog lamps, different capacity battery retrofit, disbale auto start-stop, sunroof initialization, injector calibration, etc. PS: Coding functions vary by model&year.
- Full Bidirectional Control for Active Car Tests: The D1 OTOFIX scanner also offers bi-directional control, allowing you to perform powerful active tests on car subsystems. This means that you can check the working status and functionality of open & close solenoids, energize injectors, turn cooling fan on & off, and more, all from the device itself.🚩The D1 bi-directional obd2 scanner can quickly help you to check if a system or component goes well,Improving 200% Efficiency.**Note that Active Tests available depend on the make/model/year of your car.
- 40+ Popular Maintenance Functions: OTOFIX D1 obd scanner for car performs 40+ hot services, including Oil Reset, EPB, TPMS, BMS, E.GR, G.PF, D.PF, SAS Calibration, ABS Bleeding, Injector Coding, Gearbox Match, Suspension, Crankshaft Relearn, Power Balance, etc., still growing. Great choice for DIYers, technician, repair shop. 🚩Get MORE special functions from "Car Brand>System>Service". Check compatibility before purchase via 📧 otofixaftersales-amz@ outlook.com.
- OE-Level All Systems Diagnostic + One-Click AutoVIN & AutoSCAN: OTOFIX D1 scanner automotriz gives you the ability to troubleshoot entire car systems including engion system,transmission system,body system,chassis,etc. 🚩One of the standout features of the D1 obd2 scanner diagnostic tool is the one-click AutoVIN & AutoScan function. This feature allows you to quickly and easily scan all diagnosable ECUs with just one click, and identify any problems hidden in your vehicle's systems.
Last update on 2026-06-12 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.