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NHTSA ID Number: 10224823
Manufacturer Communication Number: 21-NA-192
Summary
This service bulletin provides repair information to correct a customer concern of the Convertible Top May Not Lower Intermittently, Technician may find DTC B19E4 SYM64 Stored in History.
Condition
Some customers may comment that the convertible top may not lower intermittently.
Technicians may find DTC B19E4 SYM64 stored in history.
Cause
Note: This hall effect sensor (2) is looking for the roof to be fully latched at the header.
We have seen cases where the hook is not extending far enough to reach the magnet (1).
The cause of the condition may be that the hall effect sensor, in the right side folding top front latch striker, may be out of position.
Correction
The simplest solution is to adjust the right side folding top front latch striker following the steps in the Service Procedure below.
Parts Information
No parts are required for this repair.
4 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| CHEVROLET | CORVETTE | 2020-2023 |
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-192
Date: October, 2022
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- Make permanent repairs to Jeep and convertible roofs, soft tops, vinyl windows, roll cage covers, seats and more
- Apply Aquaseal FD adhesive to rips and holes, which dries to a waterproof and highly flexible repair
- Use Tenacious Tape Repair Tape with its ultra-aggressive adhesive that won't peel or lift
- Take this multipurpose kit anywhere; contains Aquaseal FD adhesive, Tenacious Tape patches, sewing tools, brushes and gloves
- Packaging may vary
- Waterproof Cotton Canvas: The self-adhesive canvas outdoor repair tape is made of high-density canvas material that is wear-resistant and scratch-resistant. The fabric surface is coated with a waterproof layer, providing excellent resistance to water penetration, making it suitable for outdoor use. The patch has a thickness of 1.2mm, which is moderate and flexible, allowing it to blend well with outdoor equipment such as umbrellas and tents, and can last for an long period.
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- Instructions for Use: Ensure cleanliness and dryness of the damaged area, then cut the patch to the appropriate size. Peel off the backing paper and apply the patch to the area that needs repair, completing the process. This quick and convenient method saves a significant amount of repair time and helps you solve your problems effortlessly.
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- The Stormsure Car Soft Top Roof & Convertible Repair Kit offers a convenient and affordable way to repair your soft top/convertible roof. Cabriolet/convertible roofs can get worn down with time, by poor weather, or by being damaged by vandals.
- You can use the Stormsure Car Soft Top Roof & Convertible Repair Kit to perform an easy, flexible, and durable repair to get your car back on the road. The kit contains a 5g tube of clear Stormsure Flexible Repair Adhesive, a 15cm TUFF Tape strip, two 75mm (diameter) TUFF Tape patches, as well as protective gloves; everything you need to make an effective and long-lasting repair.
- Stormsure Flexible Repair Adhesive is one of the few products that can repair rips, holes, and worn areas on all types of cabriolet/soft top roof. Repairs are waterproof, flexible and resistant to abrasion (movement and weather abrasion).
- TUFF Tape is a transparent non-rip tape that is both waterproof and durable. Small repairs can be easily made by simply sticking TUFF Tape over the hole, leaving a repair that can withstand extreme temperatures and rain or can be used to make neater repair with Stormsure Flexible Repair Adhesive.
- Applicable to a Variety of Fabrics：Canvas repair patches can be used for repairing linen,cotton,nylon,velvet,leather,ect. Effectively repair indoor and outdoor items of various damage problems, such as scratches, holes, fading and so on
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- Waterproof Cotton Canvas：Self-adhesive canvas outdoor repair tape is made of selected waterproof cotton canvas, strong texture, wear-resistant and scratch-resistant.0.6mm thickness is moderate, flexible, and can be tightly adhered to sofas, tents, and other indoor and outdoor items
- After-sales service: every canvas repair subsidy sold,will enjoy lifetime after-sales service, no matter what the reason, if our products have quality problems, please explain with us, we will do our best to meet your needs
- Professional Formula - This Black Silicone Adhesive Sealant Is A Sensor-safe, General Purpose Black RTV Sealant That Can Be Used Inside Or Outside For All Your Jobs
- Do It All- Seal, Bond, Repair, Mend And Secure Glass, Metal, Plastics, Fabric, Vinyl, Weather Stripping, Vinyl Tops, And More With This Black RTV Silicone Sealant
- Resist The Elements- Permatex Black Silicone Adhesive Sealant Is Waterproof And Flexible; Resists Water, Weather, And Vibration On All Your Applications
- Multipurpose Formula- With A Temperature Range From -75°f To 450°f (-59°c To 232°c) Black RTV Silicone Can Be Used All Around And Can Be Used To Protect And Repair Electrical Wiring
- Suggested Applications- Door Frames, Electrical Connections, Seams And Roofs, Vinyl Tops, Weather Stripping, Housings And Coverings, (not Recommended For Engine Gasket Applications)
- ★ The industrial thread and needle Best Selling Upholstery Repair Kit for Carpets, Canvas, Upholstery, Coats, Tents, Mattresses, Furs and Leather.
- ★The upholstery needle and thread Including 3 Pieces Spools wax thread;7 Pieces Heavy Duty Curved Upholstery Needles Come in a Variety of Sizes and Shapes for Different Uses
- ★ Upholstery Thread is Bonded 3-ply Nylon Thread,100% Nylon Thread for Hand or Machine Sewing Indoor or Outdoor Heavyweight Fabrics.
- ★ Thick Waxed Thread for best results use a Heavy Duty Needle (included) and increase stitch length, heavy duty thick thread and needle assorted hand needles come in a variety of sizes and shapes for different uses around the house.
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- WATERPROOF & WINDPROOF,TOUGH & TEAR RESISTANT MATERIAL: The fabric repair patches is sealed with a waterproof coating to effectively resist storm washout and penetration. From high-density polyester canvas material, not easy to fade, moderate thickness, tough and tear-resistant, wear-resistant to external impacts, giving the damaged area a more tenacious protective barrier to avoid secondary damage
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- The super strong adhesive is not easy to come off, and remains firmly adhered to outdoor fabrics and materials, including canvas,polyester, nylon, vinyl, linen, cotton, etc., in extremely cold and hot weather below zero degrees Celsius. Repairs virtually any camping gear surface by sticking to it, including tents, patio umbrellas, RV awnings, grill covers, boat covers, outdoor furniture covers, bimini tops,sail,hammocks, sleeping bags, backpacks, luggage, ski jackets, etc
- REPAIR ALL KINDS OF OUTDOOR GEAR IN 30 SECONDS: No sewing or ironing required, just remove the liner, stick it on the torn surface and apply pressure. Fast and efficient, can be the best choice for emergency repair of outdoor equipment
- After-sales service: every canvas repair subsidy sold,will enjoy lifetime after-sales service, no matter what the reason, if our products have quality problems, please explain with us, we will do our best to meet your needs
- ECO-FRIENDLY & SAFE - Designed without harsh chemicals or bleach, this cleaner is not only safe for your car but also environmentally friendly. It won't damage automotive finishes, chrome, or glass, making it the go-to choice for convertible top m...
- DEEP CLEANING ACTION - Chemical Guys Convertible Top Cleaner penetrates deep, effectively removing stubborn dirt, stains, and contaminants without harming the fabric or the car's finish.
- ADVANCED PROTECTION - The Convertible Top Protectant and Repellent provides a robust shield against liquids, dirt, UV rays, and stains, ensuring your top remains clean and vibrant for longer.
- ECO-FRIENDLY & SAFE - Designed without harsh chemicals or bleach, this cleaner is not only safe for your car but also environmentally friendly. It won't damage automotive finishes, chrome, or glass, making it the go-to choice for convertible top m...
- DEEP CLEANING ACTION - Chemical Guys Convertible Top Cleaner penetrates deep, effectively removing stubborn dirt, stains, and contaminants without harming the fabric or the car's finish.
- WATERPROOF & ABRASION RESISTANT: The canvas patch are made of high-density canvas material, which is abrasion and tear resistant and not easy to fade. The surface of the canvas patch kit is coated with a water-resistant layer for excellent waterproof performance, and the soft fabric can blend well with outdoor equipment such as umbrellas and tents to provide a stronger protective barrier.
- PROFESSIONAL SELF-ADHESIVE ADHESIVE: The canvas tent patch backing is made with a self-adhesive adhesive designed for fabrics, which is stronger and less likely to come off than ordinary clear adhesive, and works perfectly with a wide range of fabrics such as linen, velvet, cotton, leather and nylon, making it easy to repair without complicated tools or techniques.
- WIDELY APPLIED:Couch patch is a versatile repair material that can easily fix scratches, holes, cracks and other damages on all kinds of outdoor gear. Whether it's a tent, parasol, awning, canvas or sofa, this canvas patch will come in handy. No need to buy new furniture or outdoor items, saving you money.
- QUICK REPAIR: To use, simply peel off the release paper from the back and stick it to a clean surface. The application process takes only 1 minute to complete, making your repair easier and more convenient.
- AFTER-SALES SERVICE: No matter what the reason is, if there is any problem with our products, please explain with us and we will do our best to meet your needs!
- CLAIM BACK THE ORIGINAL BLACK COLOR ? Forever convertible top restorer black has shown proven results to restore the dull and faded color of vinyl and plastic convertible tops to perfectly new black look; Not only tops, but any part made of vinyl or plastic will look entirely new
- LONGSTANDING RECLAMATION ? No need to worry, your happiness won?t be short-lived; Forever Black Black-Top Gels bring long-term restoration solution of black finish of your cars convertible; It would stand lots of extreme rains and sun shines
- AMPLE AMOUNT ? The 8 Fl. Oz. bottle of Forever Black Black-Top Gel is more than enough for your convertible top; You would be left with plenty of gel to polish other interior or exterior black vinyl or plastic parts; It provides on average coverage for two tops
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.
Last update on 2025-04-16 / Affiliate links / Images from Amazon Product Advertising API
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Copyright 2022 General Motors
LLC. All Rights Reserved. Service Bulletin Bulletin No.: 21-NA-192 Date: October, 2022 TECHNICAL Subject: Convertible Top May Not Lower Intermittently, DTC B19E4 SYM64 May be Stored in History Brand: Model: Model Year: Date Breakpoint: Engine: Transmission: from to from to Chevrolet Corvette 2020 2023 — — All All Involved Region or Country North America, Middle East, Europe, Australia/New Zealand Condition Some customers may comment that the convertible top may not lower intermittently. Technicians may find DTC B19E4 SYM64 stored in history. Cause 5892481 Note: This hall effect sensor (2) is looking for the roof to be fully latched at the header. We have seen cases where the hook is not extending far enough to reach the magnet (1). The cause of the condition may be that the hall effect sensor, in the right side folding top front latch striker, may be out of position. Correction The simplest solution is to adjust the right side folding top front latch striker following the steps in the Service Procedure below. Page 2 October, 2022 Bulletin No.: 21-NA-192 Service Procedure Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws applicable to the activities it performs under this bulletin, including but not limited to handling, deploying, preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. In the event of a conflict between the procedures set forth in this bulletin and the laws that apply to your dealership, you must follow those applicable laws. 5389192 Bulletin No.: 21-NA-192 October, 2022 Page 3 Note: The windshield upper garnish molding must be completely removed. Removing fasteners on only one side and flexing the molding, may damage the part. This type of damage due to not removing the complete molding should not be submitted under warranty. 1. Remove the windshield upper garnish molding (2). Refer to Windshield Upper Garnish Molding Replacement (Convertible) in SI. 5892482 2. Locate the right folding top front latch striker and mark the location of the outboard bolt washer. 5892483 3. Loosen the right folding top front latch striker bolts (1). Refer to Folding Top Front Latch Striker in SI. 5892484 4. After loosening the 2 bolts, move the striker outboard 2 mm (0.08 in), attempting to keep the same fore/aft positioning. 5892483 5. Tighten the folding top front latch striker bolts (1). Tighten Tighten the bolts to 22Y(16 lb ft). 6. Ensure the folding top functions correctly and the code does not return. Page 4 October, 2022 Bulletin No.: 21-NA-192 5389192 7. Reinstall the windshield upper garnish molding (2). Refer to Windshield Upper Garnish Molding Replacement (Convertible) in SI. Parts Information No parts are required for this repair. 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 6086008* Adjust the Folding Top Right Front Latch Striker 1.3 hrs *This is a unique Labor Operation for bulletin use only. Version 3 Modified Released August 23, 2021 Revised February 18, 2022 – Added the 2022 Model Year, a Date Breakpoint and Europe to Involved Region or Country section. Revised October 04, 2022 – Added the 2023 Model Year, removed date Breakpoint, added Australia/New Zealand to Involved Region or Country section and added an Important statement at start of Service Procedure. GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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