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HOMESERVICE MANUALSGMC2010SAVANA G2500, VAN CARGO EXTENDED, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1934 (AUTOMATIC TRANSMISSION - 6L90 - REPAIR INSTRUCTIONS - ON VEHICLE)REPAIR INSTRUCTIONS - ON VEHICLECONTROL SOLENOID VALVE & TRANSMISSION CONTROL MODULE ASSEMBLY REPLACEMENT
2010 GMC Savana G2500, Van Cargo Extended, 6.6 6

Control Solenoid Valve & Transmission Control Module Assembly Replacement

2010 GMC Savana G2500, Van Cargo Extended, 6.6 6SECTION Control Solenoid Valve & Transmission Control Module Assembly Replacement
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2011 GMC Savana Special, 2011 GMC Savana Camper Special, 2011 GMC Savana, 2011 Chevrolet RV Cutaway, and 2011 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Control Solenoid Valve And Transmission Control Module Assembly
GM1566335Courtesy of GENERAL MOTORS CORP.
Control Solenoid Valve & Transmission Control Module Assembly Replacement

Callout Component Name
Preliminary Procedure 
Remove the control valve body assembly. Refer to Control Valve Lower Body and Upper Body Replacement .
1 NEW Fluid Pump Seal Assembly
2 NEW Fluid Pump Seal Assembly
3 NEW Center Support Fluid Passage Seal Assembly
4 Control Valve Body Assembly
CAUTION:

The control valve body assembly needs to be lowered into place vertically, with no lateral movement. Lateral movement can damage the pass through connector pins and/or the oil transfer seals.

  • Note the lengths of the bolts when removed for correct positioning during installation.
  • Align the manual shift shaft position switch activator slide with the detent lever guide pin.
5 Bolt M5 x 73 (Qty: 6)
CAUTION:

Refer to Fastener Caution .

Procedure

  1. Tighten in the sequence shown.
  2. If a NEW TCM has been installed into the vehicle, the NEW module needs to be reprogrammed. Refer to Service Programming System (SPS) .
  3. Perform the Reset Transmission Adapts. Refer to Reset Transmission Adapts .

TIP:  The Service Fast Learn Adapts procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set:
  • Transmission internal service/overhaul
  • Valve body repair or replacement
  • Control solenoid valve assembly replacement
  • TCM software/calibration update
  • Any service in response to a shift quality concern
Torque  Control Solenoid Valve Assembly Bolts to Specifications: 8 N.m. (71 In. Lbs).
Special Tool 
DT-48285  Valve Body TORX Plus Socket (if applicable)
For equivalent regional tools, refer to Special Tools .
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.