PIE0679

Subject:
Engineering Information - Popping and/or Clunking Type Noise Heard During Hard Turns, Steep Driveway
Entries/Exits and/or Going Over Speed Bumps, Creaking Type Noise While Turning Wheel Left and/or Right, Clicking
Type Noise Heard On Slow Sharp Turns
Attention:
Proceed with this EI ONLY if the customer has commented about this concern AND the PIE number is listed in the
Global Warranty Management / Investigate History link (GWM/IVH). If the customer has not commented about this
condition or the EI does not show in GWM/IVH, disregard the PIE and proceed with diagnostics found in published
service information. THIS IS NOT A RECALL refer to Service Bulletin 04-00-89-053 for more details on the use of
Engineering Information bulletins.
Brand:
Model:
Model Year:
VIN:
from
to
from
to
-
-
Cadillac
Escalade Models
2021
2022
Chevrolet
Silverado 1500
2019
2021
Silverado 1500 LTD (RPO
J21, 12th VIN Digit = 4 or
less)
2022
2022
Suburban
2021
Engine:
Transmission:
-
-
Tahoe
GMC
Sierra 1500
2019
2021
Sierra 1500 Limited (RPO
J21, 12th VIN Digit = 4 or
less)
2022
2022
Yukon Models
2021
Involved Region or Country
North America
Condition
Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this EI.
Some customers may comment on having one or more of the following conditions:
•
Popping and/or clunking type noise heard during hard turns, steep driveway entries/exits and/or going over
speed bumps
Cause
•
Creaking type noise while turning wheel left and/or right
•
Clicking type noise heard on slow sharp turns
This condition may be due to the front upper control arm ball joint nut being loose or missing.
Correction
If you encounter a vehicle with the above concern, perform the following steps and contact the engineers listed below with your findings:
Ensure that vehicle meets the following qualifications:
–
The vehicle has not been modified with a suspension lift or level kit.
–
The vehicle has factory specification tires, wheels, and struts.
–
The vehicle history does not include previous repairs which would have required upper control arm ball joint nut removal and upper control arm/knuckle
separation on either side of vehicle.
1
Measure the tightening torque of both upper control arm ball joint nuts and document your measurements. If an upper control arm ball joint nut is less than 15 NM
static tightening torque on one side of vehicle and greater than 40 NM on the opposing side, and the above statements are true, please contact the listed engineer.
Given that all requirements are met, and after conversation with the listed engineer, we will need the upper control arm, upper control arm ball joint nut, and knuckle
from both sides of the vehicle.
Additional Special Instructions:
1.
Pictures needed (from the loose side)
1.1.
Upper and lower strut mounting locations (to ensure the vehicle has not been lifted or leveled).
1.2.
Complete strut assembly.
1.3.
Side wall of tire showing size and type (to ensure the vehicle is equipped with factory size and spec tires).
1.4.
Complete wheel and tire assembly.
1.5.
Close-up picture showing the upper control arm ball joint nut to knuckle interface (prior to disassembly).
2.
When removing the nut, try not to touch the nut face (bottom side of nut) and carefully place it in a small zip lock bag and place it in the return box so that it’s
not rubbing against anything.
3.
Carefully label all left and right side parts (including the nut), denoting the loose side.
Contact Information
The Contact Information has been redacted.
Please include the following information if leaving a message:
–
Technician name
–
Dealer name and phone number
–
Complete VIN and repair order (R.O) number
On the repair order, document the date and time the call was placed (even if the engineer was not reached).
If engineering is unable to return the call within one hour, proceed with diagnosis and repair based on information found in SI.
Warranty Information
If engineer was contacted or required information was provided, use:
Labor Operation
Description
Labor Time
8080648*
Engineering Information - Popping Noise Heard On Hard Turns and/or Going
Over Speed Bumps
0.5 hr
*This is a unique Labor Operation for bulletin use only.
Version
1
Modified
Released February 28, 2022
2