NHTSA ID Number: 10090445
Manufacturer Communication Number: 13318A
Summary
13318A – SERVICE UPDATE (REVISED SERVICE PROCEDURE). THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO REPLACE THE POWER SLIDING REAR GLASS REGULATOR ON CERTAIN VEHICLES, EQUIPPED WITH THE POWER SLIDING REAR WINDOW FEATURE (A48). ON THESE VEHICLES, THE PLASTIC COMPONENTS OF THE CABLE/PULLEY ASSEMBLY MAY DEFORM, CAUSING THE FEATURE TO BECOME INOPERATIVE. IF THE WINDOW IS IN THE OPEN POSITION WHEN IT BECOMES INOPERATIVE, THE WINDOW DEFOGGER CANNOT BE ACTIVATED.
2 Affected Products
Vehicles
Parts
| Description | Quantity /Vehicle | Part Number |
| REGULATOR, RR SLDG WDO | 1 | 23441999
GM Regulator - 23441999
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API |
SEOCONTENT-START
GM Bulletin No.: 13318A
Date: October 2014
SERVICE UPDATE |
| Subject: | Service Update for Inventory and Customer Vehicles Power Sliding Rear Window Inoperable Expires with Base Warranty |
| Models: | 2014 Chevrolet Silverado 1500 |
| 2014 GMC Sierra 1500 | |
| Equipped with Power Sliding Rear Glass (A48) |
The Service Procedure section has been revised to add a note to inform technicians not to remove the second row seat buckle when completing the service procedure. Please discard all copies of bulletin 13318.
This service update includes vehicles in dealer inventory and customer vehicles that return to the dealership for any reason. This bulletin will expire at the end of the involved vehicle’s New Vehicle Limited Warranty period.
PURPOSE
This bulletin provides a service procedure to replace the power sliding rear glass regulator on certain 2014 model year Chevrolet Silverado and GMC Sierra 1500 vehicles, equipped with the power sliding rear window feature (A48). On these vehicles, the plastic components of the cable/pulley assembly may deform, causing the feature to become inoperative. If the window is in the open position when it becomes inoperative, the window defogger cannot be activated.
This service procedure should be completed as soon as possible on involved vehicles currently in dealer inventory and customer vehicles that return to the dealer for any type of service during the New Vehicle Limited Warranty coverage period.
VEHICLES INVOLVED
All involved vehicles are identified by VIN in the Global Warranty Management System – Investigate Vehicle History Application. Dealership technicians should always check this site to confirm vehicle involvement prior to beginning any required inspections and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description or option content.
Additionally, a list of involved vehicles currently in dealer inventory is available on the “Service Update Bulletin Information” link under the “Service” tab in GM GlobalConnect (US) or attached to the GlobalConnect message (Canada) used to release this bulletin. Customer vehicles that return for service, for any reason, and are still covered under the vehicle’s base warranty should also be checked for vehicle eligibility.
PART INFORMATION
Parts required to complete this service update are to be obtained from General Motors Customer Care and Aftersales (GMCC&A). Please refer to your “involved vehicles listing” before ordering parts. Normal orders should be placed on a DRO = Daily Replenishment Order. In an emergency situation, parts should be ordered on a CSO = Customer Special Order.
| Description | Quantity /Vehicle |
Part Number |
| REGULATOR, RR SLDG WDO | 1 | 23441999
GM Regulator - 23441999
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API |
SERVICE PROCEDURE
Note: Removal of the second row seat buckle is NOT required to perform the Rear Sliding Window Regulator Replacement procedure. Do NOT remove the second row seat buckle when performing this service procedure.
- Remove the rear sliding window regulator. Refer to Rear Sliding Window Regulator Replacement (Extended Cab) or Rear Sliding Window Regulator Replacement (Crew Cab) in SI.
- Install a new rear sliding window regulator. Refer to Rear Sliding Window Regulator Replacement (Extended Cab) or Rear Sliding Window Regulator Replacement (Crew Cab) in SI.
WARRANTY TRANSACTION INFORMATION
Submit a transaction using the table below. All transactions should be submitted as a ZFAT transaction type, unless noted otherwise.
| Labor Code | Description | Labor Time |
| 9100252 | Rear Sliding Window Regulator Replacement | 0.8* |
* The Labor Time Guide will be updated in January to reflect the new labor time of 0.8 hours.
DEALER PROGRAM RESPONSIBILITY
Whenever a vehicle subject to this service update enters your vehicle inventory, or is in your facility for service in the future, and the vehicle is still covered under the New Vehicle Limited Warranty, you must take the steps necessary to be sure the service update correction has been made before selling or releasing the vehicle.
SEOCONTENT-END
GM Bulletin No.: 13318A
Date: October 2014
To View or Download this Document Click Here
NHTSA ID Number: 10060069
Manufacturer Communication Number: SB-13318-A
To View or Download this Document Click Here
GM Bulletin No.: 13318
Date: November 2013
To View or Download this Document Click Here
https://static.nhtsa.gov/odi/tsbs/2013/SB-10070280-7680.pdf
To View or Download this Document Click Here
NHTSA ID Number: 10060060
Manufacturer Communication Number: SB-13318
To View or Download this Document Click Here
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