For select units of the GMC Savana, General Motors has released a customer satisfaction program over an issue with a transmission control valve.
According to Customer Satisfaction Program N232428780, certain 2017 Savana and 2021 Savana examples may have a condition where the transmission Control Valve Body Ball Check Valves can prematurely wear, which can cause them to become stuck or pass through the Control Valve Body Space Plate. If this were to occur, the driver may not be able to shift from Park to Drive or Reverse once the affected vehicle begins operation.
To remedy this, certified GM technicians are instructed to inspect affected units and replace the transmission Control Valve Body Spacer Plate package. Notably, this should take techs a little less than three hours to complete this fix.
It’s worth noting that General Motors has suggested that owners take affected vehicles to Medium Duty dealers to perform the repair. However, if this isn’t possible, owners may take their Savana units to servicing dealers with equipment that meets or exceeds the vehicle weight, which is also able to safely and properly lift the vehicle.
As a reminder, the current GMC Savana is available with two engine options, including the naturally aspirated 4.3L V6 LV1 gasoline engine, rated at 276 horsepower and 298 pound-feet of torque, and the naturally aspirated 6.6L V8 L8T gasoline engine, rated at 401 horsepower and 464 pound-feet of torque. A GM six-speed automatic transmission is matched to both engines. Notably, the 2.8L I4 LWN turbodiesel Duramax engine was dropped for the 2023 model year, as GM Authority previously covered.
In regard to structure, the GMC Savana rides on the GMT 610 platform, while production takes place at the GM Wentzville plant in Missouri. Notably, the Savana Cutaway is also produced by Navistar at a separate facility in Ohio.