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NHTSA ID Number: 10198887
Manufacturer Communication Number: 21NA118
Summary
This technical bulletin provides a procedure to align the exhaust causing a vibration.
8 Affected Products
Vehicles
Condition
Some customers may comment on a vibration type noise at highway speeds and/or with Engine Speed at 1,300-1,500 RPM. The sound can usually be heard from under the vehicle.
Cause
The cause of the condition may be due to some of the metal gasket tabs between the front exhaust and muffler not being fully crimped, exhibiting some spring-back, allowing for them to touch at certain speeds / RPMs.
Correction
Refer to the procedure below to correct the condition stated above.
Service Procedure
With a small punch or chisel and hammer bend/crimp the tabs on the exhaust gasket in further to prevent any spring-back and provide increased clearance between the two tabs to correct the noise or cutting the tabs off the gaskets is also acceptable.
Parts Information
No parts are required for this repair.
SEOCONTENT-START
Service Bulletin Bulletin No.: 21-NA-118 Date: May, 2021 TECHNICAL Subject: Vibration Type Noise Heard at Highway Speeds or with Engine Speed at 1,300-1,500 RPM Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Cadillac
XT5 XT6 2020 2021 LGX All Chevrolet Blazer GMC Acadia Involved Region or Country North America, Russia, Middle East, Israel, Palestine, Chile, Columbia, Ecuador, Peru, Japan, S. Korea, Australia and New Zealand. Condition Some customers may comment on a vibration type noise at highway speeds and/or with Engine Speed at 1,300-1,500 RPM. The sound can usually be heard from under the vehicle. Cause The cause of the condition may be due to some of the metal gasket tabs between the front exhaust and muffler not being fully crimped, exhibiting some spring-back, allowing for them to touch at certain speeds / RPMs. Correction Refer to the procedure below to correct the condition stated above. Service Procedure 5776432 With a small punch or chisel and hammer bend/crimp the tabs on the exhaust gasket in further to prevent any spring-back and provide increased clearance between the two tabs to correct the noise or cutting the tabs off the gaskets is also acceptable. Parts Information No parts are required for this repair. Page 2 May, 2021 Bulletin No.: 21-NA-118 Warranty Information For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. Labor Operation Description Labor Time 4088058* Align Exhaust System 0.3 hr *This is a unique Labor Operation for Bulletin use only. Version 1 Modified Released March 19, 2021
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-118
Date: May, 2021
MC-10198887-9999.pdf 976.113KB
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NHTSA ID Number: 10193433
Manufacturer Communication Number: PIT5825B
Summary
This Preliminary information communicates information regarding a Vibration Type Noise from the metal gasket tabs between the front exhaust and muffler.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5825B
Published date: 04/6/2021
MC-10193433-9999.pdf 274.212KB
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- Available in 16 different shapes and designs, including: bolt hole alignment, ball head separation, unfolding knuckle, center punch, knockout bolts and pins.
- Heat treated chromium vanadium provides a high hardness rating that prevents rapid expansion of the head and passivation of the chisel and punch.
- 5PC Tapered punch: 3/32" x 5-1/4", 1/8" x 5-3/4", 5/32" x 6", 3/16" x 6-1/4", 1 /4" x 6-3/4" and 3PC Cold Chisels: 3/8" x 5-1/2", 1/2" x 6", 5/8" x 6-1/2"
- 5PC Punch: 3/32" x 4-1/4", 1/8" x 4-3/4", 5/32" x 5", 3/16" x 5-1/4", 1/4" × 5-3/4" and 2PC Center punch: 1/8" x 5", 3/16" x 6"
- Product material: made of chrome vanadium steel, hardness: 54~58HRC
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- Roll Pin Punch Set is a great set of tools designed to remove and re-use roll pins without causing major damage to the pins.
- 9pcs different size including 1/16”, 5/64”, 3/32”, 1/8”, 5/32”, 3/16”, 7/32”, 1/4”, 5/16”, This set is ideal for repairing or servicing, small equipment, machines, and vehicles.
- Fitted nylon storage pouch:This 9pcs roll pin punch set tool kit come with Black carrying bag, easy to use, carry, storage or hang this tool set
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- 1.Stable in Use: Made of 40# chrome vanadium steel with special heat treatment. Ideal punch tool for jewelers, watchmakers, and carpenters. Used for machinery, vehicles, woodworking and craft repair. After many experiments, we found that the pin is the most easily damaged part of a whole set of our punch set, so we have made numerous modifications to provide you with excellent quality pin punches, so that you can avoid the abandonment of the whole set of punches due to the breakage of one pin.
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- 4. Detachable Hammer: In use with a chrome-plated steel hammer. In addition, we added 4 replaceable hammer heads (1 brass, 1 chrome, 1 nylon in white and 1 rubber in black), so you can choose the right one for your needs. The hammer has a non-slip design, which can cooperate with you in the process of use can be better grip.
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- Durable Chrome Vanadium Steel: Crafted from high quality chrome vanadium steel, our punch set offers exceptional rustproof coating and strong corrosion resistance, ensuring long lasting durability for all your gunsmithing and mechanical projects.
- Comprehensive 9-Piece Set: Includes a variety of sizes (1/16”, 5/64”, 3/32”, 1/8”, 5/32”, 3/16”, 7/32”, 1/4”, and 5/16”), perfect for precise pin removal and re-use without causing damage. Ideal for tasks such as AR 15 assembly, liftgate repair, glock pin set and detailed mechanical work.
- Convenient Nylon Storage Pouch: Comes with a fitted, high quality nylon storage pouch for easy organization and portability of gunsmithing tools. Keep your tools secure and readily accessible whether you're at the workshop or on the go.
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- Versatile and User Friendly: Perfect for a wide range of users including jewellers, watchmakers, engineers, carpenters, and DIY enthusiasts. Highly praised for its ease of use and effectiveness, making these nail punch a valuable addition to any tool collection.
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- NON-SLIP BENCH BLOCK - The included bench block is engineered with a special surface treatment to protect delicate surfaces from scratches. Equipped with a non-slip mat, it provides a stable base for all your punching needs, making it a reliable addition to any tool kit
- CUSTOMIZED HAMMER - This Pin Punch Hammer Set features a robust, chrome-plated steel hammer with four interchangeable heads (rubber, brass, steel, nylon), enhancing flexibility for different tasks. The detachable design ensures precise impact for gunsmithing, woodworking, and mechanical repairs, tailored to your project needs
- PREMIUM PUNCHES - Our 25-Piece Set is designed to withstand rigorous use. Each pin is specially treated to be more durable than other brands, making our set ideal for both professionals and hobbyists alike
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- STRENGTH AND DURABILITY: One-piece construction forged from tempered tool steel
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- INCREASED VISIBILITY: Powder coating helps enhance visibility for quick identification
- SIZES INCLUDE 1/16 in., 5/32 in., 5/16 in., 1/4 in., 3/16 in., and 1/8 in.
- 16-piece woodworking punch and chisel set includes 3 cold chisels, 5 taper punches, 5 pin punches, 2 center punches, and 1 chisel punch gauge
- Heat treated, chrome vanadium (Cr-V) alloy steel construction
- Comfortable handles reduce hand strain and improve accuracy
- Storage pouch with velcro closure keeps tools organized and secured
- Use safety goggles
- SPECIFICATIONS: This set includes one roll pouch, five tapered punches (3/32 x 5-1/4, 1/8 x 5-3/4, 5/32 x 6, 3/16 x 6-1/4, 1/4 x 6-3/4 inch), three cold chisels (3/8 x 5-1/2, 1/2 x 6, 5/8 x 6-1/2 inch), 5 pin punches (3/32 x 4-1/4, 1/8 x 4-3/4, 5/32 x 5, 3/16 x 5-1/4, 1/4 x 5-3/4 inch), 2 center punches (1/8 x 5, 3/16 x 6 inch), and 1 chisel gauge for maintaining proper chisel edges.
- QUALITY: The ARES Punch and Chisel Set is made of chrome vanadium alloy steel and is finished with black phosphate, providing each tool with increased durability. The set is heat treated, providing the tools with high hardness ratings to stand up to serious work and prevent deformation of tools.
- COMMON APPLICATIONS: This kit is an essential addition for any tool kit. Thanks to its broad coverage, these tools are great for metal working, wood workers, artists, and mechanics performing automotive rebuilds or body work. Common application include center punching, bolt hole alignment, steering knuckle and ball joint separation, driving bolts and pins and more.
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- The high quality hardened 40# steel, These Pin Punches are heat treated, drop forged, hardened and knurled steel for greater durability, workability, and overall performance.
- Pin Punch Set is a great set of tools designed to remove and re-use roll pins without causing major damage to the pins.
- 8 pcs different size including 1/16”, 3/32”, 1/8”, 5/32”,3/16”, 7/32”, 1/4”, 5/16”, This set is ideal for repairing or servicing, small equipment, machines, and vehicles.
- Fitted nylon storage pouch:This 9pcs roll pin punch set tool kit come with Black carrying bag, easy to use, carry, storage or hang this tool set
- 12 hours quick customer service, please do not hesitate to contact us if you have any question or advice, we are always looking forward to satisfying you.
Last update on 2025-05-08 / Affiliate links / Images from Amazon Product Advertising API
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