Here is the recall. I have the pdf file but it's too big to upload.I would be glad to send it to you if you want it.

Jay

Product Emission Recall
17337 Diesel Particulate Matter Sensor Diagnostic Fault
Copyright 2018 General Motors. All Rights Reserved. Page 1 of 4
Reference Number:
N172118140
Release Date:
January 2018
Revision:
02
Revision Description:
This recall is being revised to update the Attention box because all phases have been released, and to update the Service Procedure section to clarify the OAT sensor learn. Please discard all previous copies of bulletin 17337-01.
Attention:
This Product Emission Recall was released in phases:
• Phase 1 includes certain 2017-2018 model year Chevrolet Silverado HD and GMC Sierra HD vehicles.
• Phase 2 includes certain 2016-2018 model year Chevrolet Colorado and GMC Canyon, 2017 model year Chevrolet Cruze, and 2017 model year Chevrolet Express and GMC Savana vehicles.
• Phase 3 includes certain 2018 model year Chevrolet Cruze and Equinox, and GMC Terrain vehicles.
Make
Model
Model Year
RPO
Description
From
To
Chevrolet
Colorado
2016
2018
LWN
Engine-Diesel, 2.8L
Cruze
2017
2018
LH7
Engine-Diesel, 1.6L
Express
2017
2017
LWN
Engine-Diesel, 2.8L
Equinox
2018
2018
LH7
Engine-Diesel, 1.6L
Silverado HD
2017
2018
L5P
Engine-Diesel, 6.6L
GMC
Canyon
2016
2018
LWN
Engine-Diesel, 2.8L
Savana
2017
2017
LWN
Engine-Diesel, 2.8L
Sierra HD
2017
2018
L5P
Engine-Diesel, 6.6L
Terrain
2018
2018
LH7
Engine-Diesel, 1.6L
Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections and/or repairs.
Condition
General Motors has decided to conduct a Voluntary Emission Recall involving certain 2016 model year Chevrolet Colorado, GMC Canyon; 2017 model year Chevrolet Express, GMC Savana; 2017-2018 model year Chevrolet Colorado, Cruze, Silverado HD, GMC Canyon, Sierra HD and 2018 model year Chevrolet Equinox, GMC Terrain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor.
Additionally, a subset of these vehicles, certain 2017 model year Chevrolet Silverado HD and GM Sierra HD vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle braking.
Correction
Program the engine control module, and transmission control module when applicable.
Parts
No parts are required for this repair.
Warranty Information
Labor Operation
Description
Labor Time
Trans. Type
Net Item
9102933 *
Engine Control Module Reprogramming with SPS (Phase 2-3)
0.3
ZFAT
N/A
Add: To Relearn OAT Sensor (Colorado/Canyon Only) (Phase 2)
0.2
9102934 *
Engine Control Module and Transmission Control Module Reprogramming with SPS (2017-2018 Chevrolet Silverado HD and 2017-2018 GMC Sierra HD only) (Phase 1)
0.7
ZFAT
N/A
9103390 **
Module Programming Not Required (Phase 1-3)
0.2
ZFAT
N/A
* To avoid warranty transaction rejections, the SPS Warranty Claim Code must be entered when submitting this transaction.
** SPS