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NHTSA ID Number: 10139092
Manufacturer Communication Number: 15NA082
Summary
This technical bulletin provides repair information for installing a new stabilizer shaft bracket to correct a customer concern of on a clunking noise originating from the front of the vehicle that is more predominant during turns or traveling over bumps.
140 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CADILLAC | ESCALADE | 2007-2018 |
CADILLAC | ESCALADE ESV | 2007-2018 |
CADILLAC | ESCALADE EXT | 2007-2013 |
CHEVROLET | AVALANCHE | 2007-2013 |
CHEVROLET | SILVERADO | 2017 |
CHEVROLET | SILVERADO 1500 | 2007-2011, 2014 |
CHEVROLET | SILVERADO 2500 | 2007-2016, 2018 |
CHEVROLET | SILVERADO 3500 | 2013 |
CHEVROLET | SUBURBAN | 2007-2018 |
CHEVROLET | TAHOE | 2007-2018 |
GMC | SIERRA | 2017 |
GMC | SIERRA 1500 | 2014 |
GMC | SIERRA 2500 | 2007-2016 |
GMC | SIERRA DENALI | 2007-2013, 2015-2016 |
GMC | YUKON | 2007-2018 |
GMC | YUKON DENALI | 2007-2013 |
GMC | YUKON DENALI XL | 2007-2013 |
GMC | YUKON XL | 2007-2018 |
Condition
Clunking noise originating from the front of the vehicle that is more predominant during turns or traveling over bumps.
Cause
This may be caused by a damaged stabilizer shaft frame bracket. There have been some cases in which the bracket is cracked, as shown. This condition has been found to be the result of insufficient welds between the bracket and frame rail. There have been some cases on older vehicles of corrosion affecting the bracket.
Parts
Description | Part Number |
Bracket – Drivetrain & Frt Susp Frm Stab (Left Hand) | 84037074 |
Bracket – Drivetrain & Frt Susp Frm Stab (Right Hand) | 84037075 |
SCREW-HEX FLANGE HEAD TAPPING (2 Qty) | 11570934 |
1 Associated Document
Manufacturer Communications
Bulletin No.: 15-NA-082
Date: November, 2017
https://www.nhtsa.gov/recalls?nhtsaId=10139092
https://static.nhtsa.gov/odi/tsbs/2017/MC-10139092-9999.pdf
MC-10139092-9999.pdf 4686.919KB
NHTSA ID Number: 10201117
Manufacturer Communication Number: 15-NA-082
Summary
Clunking Noise from Front of Vehicle During Turns and/or Bumps
1 Associated Document
Manufacturer Communications
Bulletin No.: 15-NA-082
Date: Dec-2015
https://www.nhtsa.gov/recalls?nhtsaId=10201117
MC-10201117-9999.pdf 1910.925KB
“This site contains affiliate links for which OEMDTC may be compensated” |
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SEOCONTENT-START
Copyright 2017 General Motors LLC. All Rights Reserved. Service Bulletin File in Section: – Bulletin No.: 15-NA-082 Date: November, 2017 TECHNICAL Subject: Clunking Noise from Front of Vehicle During Turns and/or Bumps Attention: This Bulletin also applies to any of the models that may be Export vehicles. Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Cadillac Escalade EXT 2007 2013 All All Cadillac Escalade, Escalade ESV 2007 2018 All All Chevrolet Avalanche 2007 2013 All All Chevrolet Silverado 1500, Suburban 1500, Tahoe 2007 2018 All All GMC Sierra 1500, Yukon, Yukon XL 1500 2007 2018 All All Condition Some customers may comment on a clunking noise originating from the front of the vehicle that is more predominant during turns or traveling over bumps. Cause 4223055 This may be caused by a damaged stabilizer shaft frame bracket. There have been some cases in which the bracket is cracked, as shown. This condition has been found to be the result of insufficient welds between the bracket and frame rail. There have been some cases on older vehicles of corrosion affecting the bracket. Page 2 November, 2017 Bulletin No.: 15-NA-082 Correction If you encounter a vehicle with the above concern, follow the procedure below to install a new stabilizer shaft bracket to the frame. 1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. 4223060 4279393 4279395 2. Raise the vehicle in the air and inspect the stabilizer shaft frame brackets (both left and right) for any abnormalities or cracks and inspect welds to ensure good alignment and integrity. Refer to Lifting and Jacking the Vehicle in SI. Note: Be sure to inspect frame rails for any cracks or damage in relation to the stabilizer bracket. If the frame rail itself is cracked or damaged, repair should not be attempted. 3. Once verified that the bracket is damaged or the welds are insufficient, remove the stabilizer shaft. Refer to Stabilizer Shaft Replacement in SI. 4. On 4WD models, once the stabilizer shaft is removed also remove the front frame/front axle mount exhaust heat shield (1) located above the stabilizer bracket. 5. With the stabilizer shaft and shield removed, using a rag and wax/grease removing solvent, remove the wax coating and any grease, oil, or undercoating from the truck frame in the affected repair area. Important: Be sure to remove all wax coating around the areas of the bracket. If the wax coating is not fully removed, this could affect the weld quality when installing the new bracket. Bulletin No.: 15-NA-082 November, 2017 Page 3 4223062 6. After all the wax coating is removed, using a cut off wheel, remove the old bracket from the frame. Warning: To avoid personal injury when exposed to welding flashes or to galvanized (Zinc Oxide) metal toxic fumes while grinding/cutting on any type of metal or sheet molded compound, you must work in a properly ventilated area, wearing an approved respirator, eye protection , earplugs, welding gloves, and protective clothing. Important: Be sure to not cut the frame in process of removing the bracket. 4223065 7. After the bracket has been removed, using an angle grinder with 24 grit sand paper or equivalent clean the areas of any excess bracket weld material from the frame so that the new bracket can sit flush in the location of the old one. Important: Be sure to not grind away any frame material, only remove the weld material. 4223069 8. Clean the area of all debris in preparation of the new bracket to be welded to the frame. Important: Be sure to inspect frame rails for any cracks or damage in relation to the stabilizer bracket. If the frame rail itself is cracked or damaged, repair should not be attempted. 4223071 9. After the area is clean of all debris, place the new bracket in the location of the removed one. The bracket should seat against the frame crossmember bracket in the most forward position, along the lower surface of the frame rail, and along the inner surface of the frame rail in the rear. Note: The new bracket will need the welding locations stripped of all coating. Be sure to grind all edges of the new bracket so that the quality of the weld will not be affected. Page 4 November, 2017 Bulletin No.: 15-NA-082 4223074 10. After the bracket is in location, tack weld the bracket to the frame in all 4 corners of the bracket. This will keep the bracket from moving while welding the bracket fully to the frame. 4223077 11. After the bracket is tack welded in the location, loosely position the stabilizer shaft to verify that the bracket is in the correct location. Refer to Stabilizer Shaft Replacement in SI. 12. After verifying that the bracket is in the correct location, remove the stabilizer shaft. Refer to Stabilizer Shaft Replacement in SI. 4223078 4279397 13. Continuous-weld the new bracket into position. Ensure the rear vertical weld (1) is extended approximately 15mm above the edge of the bracket. Note: When welding, be sure to start from the bottom of the bracket and work your way upward. Note: Gas metal arc weld using ER70S-3 electrode and an Argon CO2 protective gas mixture. Alternatively, meeting AWS 7013. Note: Provide a continuous weld around the bracket. If access does not permit a continuous weld, make a 6 mm minimum overlap of adjacent welds. Warning: To avoid personal injury when exposed to welding flashes or to galvanized (Zinc Oxide) metal toxic fumes while grinding/cutting on any type of metal or sheet molded compound, you must work in a properly ventilated area, wearing an approved respirator, eye protection , earplugs, welding gloves, and protective clothing. Bulletin No.: 15-NA-082 November, 2017 Page 5 14. After the bracket has been fully welded to the frame, using Lloyd’s Pure Prep™ Metal Surface Preparation P/N 25418 (10 fluid ounce bottle), or equivalent, saturate a towel or Scotch-Brite™ (3M) pad with the pre-diluted solution and scrub the area well, rendering a foaming of the Pure Prep.™ This will greatly improve adhesion and corrosion resistance in the repair areas. 15. Using a water dampened clean towel, remove any residue and dry the affected area. Dry the repair area completely using an air hose to blow dry the frame and bracket. 16. Check the repair area for phosphate treatment by wiping it to see if any corrosion residue can be picked up. Correctly treated areas will not have any residue on the surface. 4223079 17. Apply a light flash-coat of Lloyds Kryptonite Metal Treatment P/N 36502 Life Long Rust Protection (14 ounce aerosol), or equivalent, to all bare areas of the frame where the wax coating was removed. This first coat should flash in approximately 3-5 minutes. Apply a light flash-coat to the inside of the frame rail using existing access holes, as shown. Insert the straw of the aerosol can as far as possible, and slowly work the straw back out while applying material. 4223080 18. Apply a second coat of Lloyds Kryptonite. This can be a heavy coat; double and triple passes with this product, over a light first coat, are not a problem. 4223081 19. We suggest top coating the Lloyds Kryptonite with Daubert Nox-Rust® P/N X-121B “One Coat Rust Preventative Coating” (aerosol), or equivalent. 20. Reinstall the stabilizer shaft with new stabilizer shaft clamp bolts. With new stabilizer thread cutting bolts, drive the bolts to cut the new threads, then loosen the bolts two turns and then torque to 50Y(37 lb ft). Refer to Stabilizer Shaft Replacement in SI. Note: The stabilizer shaft clamp bolt attachment holes on the new bracket are not threaded, the clamp bolts are thread cutting. Page 6 November, 2017 Bulletin No.: 15-NA-082 21. On 4WD models, install the front frame/front axle mount exhaust heat shield. 22. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. Parts Information Dealers should obtain 25418 and 36502 by contacting Lloyds by e-mail at sales@lloydslaboratories.com, or by calling 1-800-361-6766. U.S. Dealers can obtain the X-121B topcoat by contacting the Daubert website at www.daubertchemical.com or inside the U.S. only, by calling 1-800-914-0034. Canadian dealers must contact the Daubert distributor in Canada, Corrosion Control Coatings Ltd, by faxing the form below to 1-800-563-8078. Part Number Description 84037074 Bracket – Drivetrain & Frt Susp Frm Stab (Left Hand) 84037075 Bracket – Drivetrain & Frt Susp Frm Stab (Right Hand) 11570934 (2 Qty) SCREW-HEX FLANGE HEAD TAPPING 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 1480628* Repair and Replace Stabilizer Bracket on One Side 2.5 hrs Add Replace Both Stabilizer Brackets 1.5 hrs *This is a unique Labor Operation for Bulletin use only. Additional Keywords: Sway Version 3 Modified December 16, 2015 – Updated Important statements and added Additional Keywords. November 21, 2017 — Updated Model Years. Bulletin No.: 15-NA-082 November, 2017 Page 7 4232962 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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Escalade repair