PIE0676A

Subject:
Engineering Information (EI) – Engine Coolant Reservoir Being Overfilled with Discolored Coolant, Shudder, Shake,
Vibration, Harsh Shift, Delayed Shift and/or Slipping Transmission Performance
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 the latest version of Service Bulletin 04-00-89-053 for more
details on the use of Engineering Information bulletins.
This EI has been revised to end the need for information from the field. Please discard PIE0676.
Brand:
Model:
Model Year:
VIN:
Engine:
Transmission:
(Automatic)
Cadillac
from
to
from
to
2020
2022
—
—
CT6
2019
2020
Escalade
Models
2021
2022
LM2
MQC
Silverado 1500
(New Model)
2019
2019
LM2, L3B
MQE, MQB, MQC
Silverado 1500
2020
2021
Silverado 1500
LTD (RPO J21,
12th VIN Digit =
4 or less)
2022
2022
LM2
MQC
LM2, L3B
MQE, MQB, MQC
CT4
LSY
MHS, M5N
CT5
Chevrolet
MHS
Silverado 1500
New (RPO J22,
12th VIN Digit =
5 or greater)
Suburban
2021
Tahoe
GMC
Sierra 1500
(New Model)
2019
2019
Sierra 1500
2020
2021
Sierra 1500
Limited (RPO
J21, 12th VIN
Digit = 4 or less)
2022
2022
Sierra 1500 New
(RPO J22, 12th
VIN Digit = 5 or
greater)
1
Yukon Models
2021
LM2
If you encounter a vehicle with the above condition, refer to SI for further diagnosis.
Version
2
Modified
Released January 24, 2022
March 30, 2022 – Ended the need for further information from the field.
2
MQC