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NHTSA ID Number: 10205595
Manufacturer Communication Number: 21NA279
Summary
This service bulletin provides a procedure to replace the starter if found the cause of the rattle noise.
25 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| BUICK | ENVISION | 2021-2022 |
| CADILLAC | CT4 | 2020-2022 |
| CADILLAC | CT5 | 2020-2022 |
| CADILLAC | XT4 | 2019-2022 |
| CADILLAC | XT5 | 2020-2022 |
| CADILLAC | XT6 | 2020-2022 |
| CHEVROLET | BLAZER | 2019-2022 |
| GMC | ACADIA | 2020-2022 |
Condition
Some customers may comment that a rattle type noise can be heard coming from the engine/transmission area or from the front of vehicle when the engine is running or the vehicle is in motion and making turns.
Cause
The cause of this condition may be that the starter pinion gear may be loose and making contact with the flywheel.
Correction
Note: To duplicate this noise, drive the vehicle at low speed and make right hand turns. The rattle develops from the starter drive gear sliding down the starter motor shaft and contacting the ring gear.
Inspect and, if necessary, replace the starter.
⇒ If you are able to duplicate the noise, remove the starter motor per the SI procedure and inspect the drive pinion gear. Hold the starter level and tip the nose down. If the gear slides down the motor shaft, replace the starter.
Service Procedure
Refer to Starter Replacement in SI.
SEOCONTENT-START
Service Bulletin Bulletin No.: 21-NA-279
Date: December, 2021
TECHNICAL
Subject: Rattle Type Noise Heard Coming from Engine/Transmission Area or from Front of
Vehicle When Engine is Running or Vehicle is in Motion and Making Turns
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Buick Envision 2021
2022 — —
2.0L
Turbo (LSY) —
Cadillac
CT4 2020
CT5 2020
XT4 2019
XT5 2020
XT6 2020
Chevrolet Blazer 2019
GMC Acadia 2020
Involved Region or Country United States, Canada, Europe, Russia, Middle East, Israel, Palestine, Chile, Colombia,
Peru, Japan, Cadillac Korea (South Korea)
Condition
Some customers may comment that a rattle type noise can be heard coming from the
engine/transmission area or from the front of vehicle when the engine is running or the
vehicle is in motion and making turns.
Cause The cause of this condition may be that the starter pinion gear may be loose and making
contact with the flywheel.
Correction
Note: To duplicate this noise, drive the vehicle at low speed and make right hand turns.
The rattle develops from the starter drive gear sliding down the starter motor shaft and
contacting the ring gear.
Inspect and, if necessary, replace the starter.
⇒ If you are able to duplicate the noise, remove the starter motor per the SI
procedure and inspect the drive pinion gear. Hold the starter level and tip the
nose down. If the gear slides down the motor shaft, replace the starter.
Service Procedure
Refer to Starter Replacement in SI.
Parts Information
Use the VIN and refer to the GM Electronic Parts
Catalog (EPC) to determine the proper part to order.
Causal
Part
Description Part
Number
Qty
N/A STARTER, ENG Refer
to EPC
1
Page 2 December, 2021 Bulletin No.: 21-NA-279
Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
Description Labor Time
4041250
Starter Replacement Use
Published
Labor
Operation
Time
Version 1
Modified Released November 29, 2021
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-279
Date: December, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10205595
MC-10205595-9999.pdf 504.006KB
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- Condition: Remanufactured in the USA; Unit Series: PG260 Series; Voltage: 12V; kW: 1.1; Rotation: CW; Tooth Count: 9; Mounting Hardware Included: No; Unit Finish: Same as OE; Number of Pieces: 1; Country of Origin: US
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- Replaces: EAR 1 HOLE: 10.0MM UNTHREADED, MTG EAR 2 HOLE: 10.0MM UNTHREADED, NOTES:, STRAIGHT MOUNTING FLANGE, REPLACES OE UNITS WITH 11 TOOTH DRIVES, WEIGHT: 9.085 LBS / 4.13 KG ...
- Computer tested for consistent Quality and unsurpassed reliability
- Starter - Voltage: 12V Rotation: Clockwise Teeth On Drive / Splines: 9 Source: Aftermarket
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- Components are tested to meet original specification requirements for remarkable durability
- GM recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specifications for fit, form, and function
- Application：Fit for SBC Chevy V8 & V6 A/T & M/T with 153 or 168 Tooth Ring Gear 350 400 (up to 14:1 Compression Ratio)
- Part Number：18492, PP-106, 2-2202-HI-2,25001,25002.,91-25-1122,MPA 76012G,NAPA 44-1601
- Feature：Specifications-1.4kw/12 Volt,CW,9-Tooth Pinion
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- 100% newly manufactured as an exact replacement for your GM vehicle’s original starter
- Components are tested to meet original specification requirements for remarkable durability
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specifications for fit, form, and function
- NEW units are manufactured under the guidelines of ISO Quality Standards to ensure consistent quality
- All components are 100% NEW to provide improved performance
- Engineering enhancements to internal components provide the latest, most efficient unit for your vehicle
- Key components are greased to ensure long term reliability in harsh conditions
- All dimensions, key mounting surfaces, and contact points are gauged and measured to ensure proper fit
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