Rattle and/or Flutter Type Noise Heard From Dash When HVAC is in Bi Level Mode at Mid to High Blower Speeds – 2018-2019 Chevrolet GMC Holden

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Service Bulletin Bulletin No.: 19-NA-006
Date: June, 2019
TECHNICAL
Subject: Rattle and/or Flutter Type Noise Heard From Dash When HVAC is in Bi Level Mode at
Mid to High Blower Speeds
This Bulletin replaces PIT5627. Please discard PIT5627.
Brand: Model:
Model Year: Breakpoint:
Engine:
Transmission:
from to from to
Chevrolet Equinox
2018 2019 SOP
Prior to
October
31, 2018
GMC Terrain
Holden Equinox
Involved Region or Country North America and NA Export vehicles
Condition
Some customers may comment on a rattle and/or flutter type noise heard from dash
when the HVAC is in bi level mode at mid to high blower speeds.
Note: The rattle and/or flutter noise can be turned on and off by the mode position or
blower speed.
Cause This condition may be caused by a fitting issue between the mode door and the air
distributor.
Correction Replace the HVAC case with the redesigned part that is now available.
Service Procedure
Refer to Air Conditioning Evaporator Lower Case
Replacement in SI.
Parts Information
If necessary to replace, use the vehicle identification
number (VIN), SI, and the GM Electronic Parts Catalog
to determine the proper HVAC case to order.
Causal
Part
Description Part
Number
Qty
X CASE, A/C EVPR
& BLO
84644545
1
84644546
84644547
84644548
Page 2 June, 2019 Bulletin No.: 19-NA-006
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
4486018* Air Conditioning Evaporator Lower Case Replacement
(Equinox / Terrain) 8.7 hrs.
Add To Fill Cooling System 0.3 hrs.
Add To Recover and Recharge R-1234yf A/C System 1.2 hrs.
Add To Recover and Recharge R-134a A/C System 0.3 hrs.
*This is a unique Labor Operation for Bulletin use only.
Version 2
Modified Released May 09, 2019
Revised June 04, 2019 – Revising to add Breakpoint.

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