| “This site contains affiliate links for which OEMDTC may be compensated” |
NHTSA ID Number: 10204438
Manufacturer Communication Number: PIT5863
Summary
This Preliminary information communicates that a vehicle may be encountered with a buzz or rattle type noise emanating from the exhaust. The dealer technician is directed to replace the exhaust system.
4 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CADILLAC | XT5 | 2021 |
| CADILLAC | XT6 | 2021 |
| CHEVROLET | BLAZER | 2021 |
| GMC | ACADIA | 2021 |
Condition
A vehicle may be encountered with a buzz or rattle type noise. It may be heard or felt in the floor pan, in the dash or throughout the vehicle. This noise can be extremely difficult to duplicate. It will dependent on engine load rather than vehicle speed. Normally it can be duplicated at 2,000- 2,500 engine RPM’s but may come in at a higher range. The vehicle must be driven to duplicate the concern.
Cause
Loose or missing welds inside the front muffler/resonator
Correction:
Review 21-NA-118 Vibration Type Noise Heard at Highway Speeds or with Engine Speed at 1,300-1,500 RPM to ensure that the
gaskets are not the cause of the noise.
If the concern can be duplicated use chassis ears at or near the exhaust resonator/muffler to determine if this is where the noise is coming from.
If the vehicle was built between start of production 2021 and 6/1/2021 replace the exhaust system from the exhaust flanges back.
SEOCONTENT-START
Bulletin No.: PIT5863
Published date: 11/2/2021
Preliminary Information
PIT5863 Buzz or Rattle Noise from Exhaust System
Models
Brand: Model: Model Years:
VIN:
Engine: Transmissions:
from to
Cadillac XT5 2021 2021 SORP 6-1-2021 LGX All
Cadillac XT6 2021 2021 SORP 6-1-2021 LGX All
Chevrolet Blazer 2021 2021 SORP 6-1-2021 LGX All
GMC Acadia 2021 2021 SORP 6-1-2021 LGX All
Involved Region or
Country North America
Condition
A vehicle may be encountered with a buzz or rattle type noise. It may be heard or felt in the floor pan,
in the dash or throughout the vehicle. This noise can be extremely difficult to duplicate. It will
dependent on engine load rather than vehicle speed. Normally it can be duplicated at 2,000- 2,500
engine RPM’s but may come in at a higher range. The vehicle must be driven to duplicate the concern.
Cause Loose or missing welds inside the front muffler/resonator
Correction:
Review 21-NA-118 Vibration Type Noise Heard at Highway Speeds or with Engine Speed at 1,300-1,500 RPM to ensure that the
gaskets are not the cause of the noise.
If the concern can be duplicated use chassis ears at or near the exhaust resonator/muffler to determine if this is where the noise is
coming from.
See the illustration to determine the location of the muffler/resonator.
If the vehicle was built between start of production 2021 and 6/1/2021 replace the exhaust system from the exhaust flanges back.
Version History
Version 1
Modified 11/02/2021 Created on.
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5863
Published date: 11/2/2021
https://www.nhtsa.gov/recalls?nhtsaId=10204438
MC-10204438-9999.pdf 221.522KB
Loading...
Reload document 
Open in new tab
| “This site contains affiliate links for which OEMDTC may be compensated” |
Bestseller No. 1
Steelman Wireless ChassisEAR Auto Diagnostic Tool Kit, Identify The Cause of Troubling Vehicle Noises, 4 Transmitters with 50-Foot Range (61082)
- NOISE DETECTION - Detect the source or squeaks, rattles, and other errant or troublesome noises
- 50-FOOT RANGE - Transmitters have a 50-foot signal range allowing use on small and large vehicles
- BUILT-IN SPEAKER - Monitor sounds with the built-in speaker or via headphones through the 3.5mm jack
- SIGNAL STRENGTH INDICATOR - LED lights indicate signal strength of the active channel
- ILLUMINATED CHANNEL BUTTONS - Active channels have illuminated buttons and can be changed or muted with a quick push
Bestseller No. 2
Steelman Pro ChassisEAR 2 Auto Diagnostic Noise Finder
- PINPOINT NOISES - Easily pinpoint troubling noises that cannot be duplicated in a repair stall and only occur during road driving
- MULTI-CHANNEL - Connect up to six (6) color coded sensor clamps to different locations to find a noise's source
- FULL HEADPHONES - Includes a set of full-coverage over-ear headphones to block out surrounding noise
- USB RECHARGEABLE - USB rechargeable integrated battery provides up to 8 hours of continuous use per charge
- 10-FOOT CABLES - 10-foot long wire leads allow clamps to be positioned in difficult to reach places
Bestseller No. 3
Steelman ChassisEAR Automotive Diagnostics Multichannel Electronic Stethoscope Tool, 6 Noise-Finder Microphone Clamps with Leads, Over-Ear Headphones
- Detect troubling noises that cannot be duplicated in a repair stall and only occur during road driving
- Simultaneously connect up to 6 microphones to quickly determine the source of strange vehicle noises
- 16-foot wire leads allow microphones to be positioned in difficult-to-reach places
- Each microphone is color-coded for easy identification
- Includes a set of full-coverage headphones to block out surrounding noise
Bestseller No. 4
GoolRC Chassis System Ears Electronic Stethoscope Diagnostic Kit, Car Noise Finder Diagnostic Listening Device Multi-Channel Noise Detector Abnormal Sound Detector for Automotive
- It can quickly detect the mechanical noise emitted by diesel engines, engine underpan and cars, and accurately locate the fault.
- Six channel design, sound and light synchronization. Select the channel you want to receive and send the sound to the headset.
- This Electrical Stethoscope is a high performance maintenance tool which is particularly suiable for use in machine noise detection.
- LED light indicate the strength of signal of the active channel,user-friendly.
- The detector has high sensitivity and the earphone pick-up sound loudness can be controlled by adjusting its volume control.
Bestseller No. 5
Mefape Automotive Stethoscope, Chassis Ears with 6 Channels Color Light Indicators, Electronic Stethoscope, Automotive Diagnostic Kit, Mechanic Stethoscope for Auto Body Engine Chassis, Vol Up/Down
- Automotive Diagnostic Kit used to to help diagnose and fix problems with your vehicle by efficiently locating the noise in fuel injection system, chassis, engine, bearings, gears, and suspension system
- Mechanic Stethoscope Kit equipped with a 6-channel host and 6 different sensors, applicable to different parts of vehicles
- Electronic Stethoscope features color light indicators that help you identify the source of the noise, easier to diagnose and fix problems
- Chassis Ears come with premium headphones that are excellent in anti-interference and can transmit high-quality clear sounds
- Auto Stethoscope Kit is easy to use, cost-effective for diagnosing and fixing problems with vehicles, heavy machinery, etc
Bestseller No. 6
Chassis Ear Automotive Engine Noise Finder Tool, 6 Channel Chassis Ears Sound Detector Identify the Troubling Engine Noises (Over-Ear Headphones)
- 【Multi-Channel Chassis Ears 】6-channel detector design, the host computer with integrated 6-channel signal receiver is used with 6 different sensors ,sound and light synchronization. Engine noise detector can detect abnormal noise in different locations and adjust the reception of different channels according to the detection situation. When a generator is running, it can detect the impact of vibration due the failure of a bearing, gear, valve, crank, cylinder, gearbox, vehicle body noise, etc.
- 【LED Indicator and Adjustable Sensitivity】The power indicator lights up when the chassis ears starts up and begins testing. The abnormal sound indicator is divided into three colors: green, yellow, and red. The color changes are determined by the detected volume. The minimum volume is green and the maximum is red. By adjusting the light sensitivity knob, the indicator can be used to assist in judging the location of the anomalous noise.
- 【High Sensitivity】The chassis ears detector has high sensitivity and the earphone pick-up sound loudness can be controlled by adjusting its volume control. The automotive noise detector turn the indicator light clockwise to increase the sensitivity, and rotate counter clockwise to reduce sensitivity, the range of the indicator light changes with the adjustment of the sensitivity.
- 【Quickly Detection and Positioning】This chassis ears engine noise detector is specially designed and developed for checking abnormal noise of automobile engine, abnormal noise of body, and abnormal noise of chassis, etc. It can quickly find out the noise source and its location, accurately locate the fault, easily identify the early problems of the car and facilitate car repair as soon as possible.
- 【Packing List and Warranty】The engine chassis ear kit includes automotive detector tool, 6 clip-on sensors, sensor extension cords (3 for a 5-meter extension cord and 2 for a 3-meter extension cord), over-ear earphones. All accessories are neatly packed in the tool case for easy carrying. And we offer 12 months warranty, if you encounter any problems during use, you can get help from us, we will replace or refund, customer satisfaction is our top priority.
Bestseller No. 7
Chassis Ears Automotive Electronic Stethoscope 6 Channel Car Engine Noise Detector Sound Finder Tool with Headphones, Adjustable Sensitivity Mechanic Stethoscope with 16.4FT Extension Cables & Handbag
- 【Quick Detection and Positioning】This chassis ear engine noise detector is specially designed and developed for checking abnormal noise of automobile engine, vehicle body, chassis, etc. Automotive stethoscope can quickly find out the noise source and its location, and can detect while driving. Mechanic stethoscope can detect the impact of vibration cxaused by failures of bearings, gears, valves, cranks, etc., accurately locate faults,easily find early problems in the car, protecting your safety.
- 【6-Channel Simultaneous Diagnosis】The chassis ears automotive stethoscope uses 6 sensors and integrates 6 channel signal receivers. The electronic stethoscope is equipped with six channels and six sensor clips, which can detect abnormal noise sources in 6 different positions at the same time. You can choose different channels to receive according to the detection situation. The chassis ear noise detector has high sensitivity and provides you with accurate detection.
- 【6-Row Indicator Light for Obvious Comparison】The abnormal noise of 6 channels can be shown at the same time through 6 rows of indicator lights for obvious contrast. The abnormal sound indicator light of chassis ears is divided into 3 colors: green, yellow and red. The color changes are determined by the detected volume. The minimum volume is green and the maximum volume is red. By adjusting the light sensitivity knob,the indicator can be used to assist in judging the location of abnormal noise.
- 【Indicator & Sound Sensitivity Adjustment】Indicator Sensitivity Adjustment: Turn the light sensitivity knob clockwise to increase the sensitivity of the indicator, and turn it counterclockwise to decrease the sensitivity. The range displayed by the indicator changes with the adjustment of the sensitivity. Sound Sensitivity Adjustment: Turn the sound sensitivity knob clockwise to increase the sensitivity, which can adjust the range of the sensor pick-up sound loudness.
- 【Full-coverage Earphones & 6 Extension Cables】The car engine stethoscope kit includes a set of full-coverage earphones, which are comfortable to wear and can block the surrounding noise. The sound quality is clear and the volume can be adjusted at will. The car engine noise detector finder is also equipped with 6 extension wires of sensor clips (3pcs*9.8ft & 3pcs * 16.4ft), which are long enough to pass from the detection position to the cab, making detection operations more convenient.
Bestseller No. 8
Chassis Ears Automotive Electronic Stethoscope 6 Channel Car Engine Noise Finder Sound Detector Tester Tool Set, Adjustable Sensitivity Mechanic Stethoscope
- It can quickly detect the mechanical noise emitted by diesel engines, engine underpan and cars, and accurately locate the fault.
- Six channel design, sound and light synchronization. Select the channel you want to receive and send the sound to the headset.
- This Electrical Stethoscope is a high performance maintenance tool which is particularly suiable for use in machine noise detection.
- LED light indicate the strength of signal of the active channel,user-friendly.
- The detector has high sensitivity and the earphone pick-up sound loudness can be controlled by adjusting its volume control.
Bestseller No. 9
Chassis System Ears Electronic Stethoscope Diagnostic Kit with Headphones, PLAYOCCAR 6 Channel Car Engine Noise Finder Sound Detector Tester Tool Set
- 【SPECIAL DETECTOR TOOL】This automotive stethoscope kit is specially designed and developed for checking abnormal noise of car engine, abnormal noise of body, and abnormal noise of chassis, etc. The host computer with integrated six-channel signal receiver is used with six different sensors to detect abnormal noise during the driving of the car, synchronized with sound and light, which can easily identify the early problems of the car and facilitate car repair as soon as possible.
- 【ABNORMAL SOUND INDICATOR LIGHT】The abnormal sound indicator consists of three colors: green, yellow, and red. The color changes are determined by the detected volume. The minimum volume is green and the maximum is red. The abnormal noise of the six channels can be shown at the same time through the six rows of indicator lights. By adjusting the light sensitivity knob, the indicator can be used to assist in judging the location of the anomalous noise.
- 【SENSITIVITY ADJUSTMENT】Indicator light sensitivity adjustment: Turn clockwise to increase sensitivity and rotate counterclockwise to reduce sensitivity, the range displayed by the indicator light changes with the adjustment of the sensitivity; Sound sensitivity adjustment: Turn clockwise to increase sensitivity, this is the range of adjusting the sensor's Income tone.
- 【MAIN APPLICATION】Six-channel car noise finder is a portable device that can be used to detect bearings, gears and suspension systems, and automatic transmission system, detect abnormal sound of fuel injection system, abnormal sound of chassis system, abnormal noise under the hood, quickly find out the noise source and its location, accurately locate the fault.
- 【CONFIGURATION LIST】The package includes 1 * detector host, 6 * clip-on sensors (Abnormal noise information can be detected at six different locations at the same time), 1 * headphone (Simple and comfortable, the volume can be adjusted at will), 3 * 3M sensor extension cables, 3 * 5M sensor extension cables. We provide 1 year free warranty & 24 hours customer email support service, please feel free to reach us if you need!
Bestseller No. 10
Shkalacar Chassis Ears Automotive Electronic Stethoscope, Mechanic Stethoscope Car Engine Noise Detector with Headphones, Multi-Channel Sensitivity Diagnostic with Extension Cables & Handbag
- 【SPECIAL Electronic Stethoscope】This automotive stethoscope kit is specially designed and developed for checking abnormal noise of car engine, abnormal noise of body, and abnormal noise of chassis, etc. The host computer with integrated six-channel signal receiver is used with six different sensors to detect abnormal noise during the driving of the car, synchronized with sound and light, which can easily identify the early problems of the car and facilitate car repair as soon as possible.
- 【SENSITIVITY ADJUSTMENT】Chassis Ears with Indicator light sensitivity adjustment: Turn clockwise to increase sensitivity and rotate counterclockwise to reduce sensitivity, the range displayed by the indicator light changes with the adjustment of the sensitivity; Sound sensitivity adjustment: Turn clockwise to increase sensitivity, this is the range of adjusting the sensor's Income tone.
- 【ABNORMAL SOUND INDICATOR LIGHT】The Automotive Stethoscope onsists of three colors: green, yellow, and red. The color changes are determined by the detected volume. The minimum volume is green and the maximum is red. The abnormal noise of the six channels can be shown at the same time through the six rows of indicator lights. By adjusting the light sensitivity knob, the indicator can be used to assist in judging the location of the anomalous noise.
- 【MAIN APPLICATION】Mechanics Stethoscope with Six-channel car noise finder is a portable device that can be used to detect bearings, gears and suspension systems, and automatic transmission system, detect abnormal sound of fuel injection system, abnormal sound of chassis system, abnormal noise under the hood, quickly find out the noise source and its location, accurately locate the fault.
- 【CONFIGURATION LIST】The package includes 1 * detector host, 6 * clip-on sensors (Abnormal noise information can be detected at six different locations at the same time), 1 * headphone (Simple and comfortable, the volume can be adjusted at will), 3 * 3M sensor extension cables, 3 * 5M sensor extension cables. If you have any problems during use, please feel free to contact us.
Last update on 2024-04-09 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.