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NHTSA ID Number: 10205538
Manufacturer Communication Number: 17NA394
Summary
This technical bulletin provides a procedure for lubricating the rear leaf springs and re-torque the bolts to correct a squeak, clunking noise.
Condition 1
Some customers may comment on a squeak type noise heard from the rear of the vehicle.
Upon further investigation, the technician may diagnose the noise is coming from the rear suspension leaf spring area.
Note: The breakpoints below are relevant only to this Condition, and the cut off is in the 2019 model year.
Colorado SOP – Prior to 1GCGSCEN6K1241170
Canyon SOP – Prior to 1GTG5CEN8K1239279
Condition 2
Some customers may comment on a clunking type noise heard from the rear of the vehicle.
Upon further investigation, the technician may diagnose the noise is coming from the rear suspension leaf spring area.
Colorado SOP thru 2022
Canyon SOP thru 2022
Cause
These conditions may due to debris getting between the leaf springs.
Correction 1
Install new leaf spring inserts following the procedure below.
Correction 2
Re-torque the joints of the leaf spring assembly following the procedure below.
Parts Information
Description | Part Number | Qty |
Leaf Spring Insert | 84730971 | 8 |
RTV Sealer | 88864346 | 1 |
RTV Sealer Canada | 88861418 |
16 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CHEVROLET | COLORADO | 2015-2022 |
GMC | CANYON | 2015-2022 |
1 Associated Document
Manufacturer Communications
Bulletin No.: 17-NA-394
Date: November, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10205538
MC-10205538-9999.pdf 334.236KB
NHTSA ID Number: 10191168
Manufacturer Communication Number: 17NA394
Summary
This technical bulletin provides a procedure for lubricating the rear leaf springs and re-torque the bolts to correct a squeak, clunking noise.
1 Associated Document
Manufacturer Communications
Bulletin No.: 17-NA-394
Date: March, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10191168
MC-10191168-9999.pdf 441.626KB
NHTSA ID Number: 10165085
Manufacturer Communication Number: 17NA394
Summary
This technical bulletin provides a procedure for lubricating the rear leaf springs and re-torque the bolts to correct a squeak, clunking noise.
1 Associated Document
Manufacturer Communications
Bulletin No.: 17-NA-394
Date: August, 2019
https://www.nhtsa.gov/recalls?nhtsaId=10165085
MC-10165085-9999.pdf 242.128KB
NHTSA ID Number: 10137313
Manufacturer Communication Number: 17NA394
Summary
This technical bulletin provides a procedure for lubricating the rear leaf springs and re-torque the bolts to correct a squeak, clunking noise.
1 Associated Document
Manufacturer Communications
Bulletin No.: 17-NA-394
Date: February, 2018
https://www.nhtsa.gov/recalls?nhtsaId=10137313
MC-10137313-9999.pdf 1721.696KB
NHTSA ID Number: 10139233
Manufacturer Communication Number: 17NA394
Summary
This technical bulletin provides a procedure for lubricating the rear leaf springs and re-torque the bolts to correct a squeak, clunking noise.
1 Associated Document
Manufacturer Communications
Bulletin No.: 17-NA-394
Date: December, 2017
https://www.nhtsa.gov/recalls?nhtsaId=10139233
MC-10139233-9999.pdf 1728.572KB
“This site contains affiliate links for which OEMDTC may be compensated” |
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Copyright 2021 General Motors LLC. All Rights Reserved. Service Bulletin Bulletin No.: 17-NA-394 Date: November, 2021 TECHNICAL Subject: Squeak, Clunking Type Noise Heard From Rear of Vehicle Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Chevrolet Colorado 2015 2022 All All GMC Canyon 2015 2022 Involved Region or Country North America, Thailand, Korea, Peru, Guatemala, Argentina, Venezuela, and South Africa Condition 1 Some customers may comment on a squeak type noise heard from the rear of the vehicle. Upon further investigation, the technician may diagnose the noise is coming from the rear suspension leaf spring area. Note: The breakpoints below are relevant only to this Condition, and the cut off is in the 2019 model year. Colorado SOP – Prior to 1GCGSCEN6K1241170 Canyon SOP – Prior to 1GTG5CEN8K1239279 Condition 2 Some customers may comment on a clunking type noise heard from the rear of the vehicle. Upon further investigation, the technician may diagnose the noise is coming from the rear suspension leaf spring area. Colorado SOP thru 2022 Canyon SOP thru 2022 Cause These conditions may due to debris getting between the leaf springs. Correction 1 Install new leaf spring inserts following the procedure below. Correction 2 Re-torque the joints of the leaf spring assembly following the procedure below. Service Procedure (Condition 1) Prior to performing this bulletin, follow the procedure for Noise Diagnosis – Rear Suspension in SI to determine the source of the noise. Jounce the rear of the vehicle utilizing J 39570 Chassis Ear or equivalent, to aid in locating the source of the noise. If necessary, road test the vehicle. 1. Raise the vehicle on a frame lift-type hoist. Refer to Lifting and Jacking the Vehicle, in SI. 2. Inspect the springs for damage. • If damage has been found, refer to Rear Leaf Spring Replacement, in SI. • If damage has NOT been found, proceed to the next step. 5341853 Page 2 November, 2021 Bulletin No.: 17-NA-394 3. Install new Rear Leaf Spring Inserts using the following procedure: 5358883 Caution: Do NOT damage the finish on Leaf Springs. 3.1. On the spring assembly, insert a plastic trim tool or plastic wedge in between the #1 and #2 leaf springs, to access the old insert. 5341855 3.2. Push up on insert until it hits the bottom of the spring above it. Then use a suitable cutting tool to cut the stem off from the insert. Bulletin No.: 17-NA-394 November, 2021 Page 3 5341856 3.3. Remove the top portion of the insert, and then remove the bottom portion of the remaining stem. 5341857 3.4. Using a rag and degreaser, clean any dirt or grease from between the leaf springs at the insert location 5341859 Caution: Do NOT damage the surface of the new insert when trimming. 3.5. Cut the stem of the new insert with a hacksaw or suitable cutting tool. Make sure to leave 6 mm (0.240 in) of the stem. 5341861 3.6. Apply a small amount of RTV sealer around the remaining portion of the stem. 3.7. Install the new insert into the leaf spring. Make sure the stem portion lines up with the slot in the spring. Remove the plastic trim tool or plastic wedge to close the spring and seat the new insert. 4. Repeat step #3 for the 7 remaining inserts. 5. Lower the vehicle to the ground and test drive to verify the repair. Important: After a new vehicle is delivered to a customer, or new spring tip inserts are installed per this bulletin, new inserts have a break-in period of up to 1610 km (1000 miles), where some noise can Page 4 November, 2021 Bulletin No.: 17-NA-394 be expected. The gray spring inserts are designed to work with absolutely no lubricant. Lubricants of any kind must never be used on the gray spring tip inserts and any remaining lubricant must be completely removed when installing new tip inserts. Important: If the Service Procedure for Condition 1 fixes the squeak, DO NOT proceed to Service Procedure (Condition 2). Service Procedure (Condition 2) 1. Support the vehicle at curb height when re-torquing the leaf spring U-bolt nuts. Note: DO NOT remove the fuel tank. 4966874 2. Loosen the left leaf spring anchor plate U-bolts (1). 3. Re-torque the anchor plate U-bolts (1). Refer to SI for torque specifications. 4. Repeat steps 2 and 3 for the right side leaf spring. 5. Re-test the vehicle for the same clunking noise. If the issue remains, follow the regular repair procedure. Parts Information Causal Part Description Part Number Qty N/A* Leaf Spring Insert 84730971 8 RTV Sealer 88864346 (In Canada, 88861418) *For warranty transactions, DO NOT mark this/these parts as the Causal Part. Enter the word “Bulletin” in the Causal Part Description free-flow text field. 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 8080508* Rear Leaf Spring Insert Replacement (Condition 1) 0.5 hr. 8080398* Retorque Bolts / Road Test (Condition 2) 0.6 hr. *This is a unique Labor Operation for Bulletin use only. Version 7 Modified Released December 08, 2017 Revised February 09, 2018 – Updated steps for Service Procedure (Condition 2) and Warranty Information (Condition 2). Revised February 13, 2018 – Updated the Warranty Information (Condition 2). Revised July 11, 2018 – Added 2018–2019 model years. Revised August 06, 2019 – Updated Procedure, Parts and Warranty Information for Spring Insert Replacement. Revised March 04, 2021 – Added 2020–2021 Model Years, Removed Breakpoint from Condition #2, Updated Export Countries Revised November 15, 2021 – Added 2022 Model Year to Condition # 2, and an Important after Step #5 in Service Procedure (Condition 1).
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