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HOMESERVICE MANUALSGMC2010SAVANA G2500, VAN CARGO EXTENDED, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 29 (AUTOMATIC TRANSMISSION - ALLISON - DIAGNOSIS)REMOVAL & INSTALLATIONPOWERTRAIN CONTROL MODULEINSTALLATION
2010 GMC Savana G2500, Van Cargo Extended, 6.6 6

Powertrain Control Module: Installation

2010 GMC Savana G2500, Van Cargo Extended, 6.6 6SECTION Installation
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the PCM. Ensure that the mounting tabs are engaged. See Figure.
  2. Secure the spring latch to the PCM.
  3. Connect the PCM electrical connectors. See Figure.
  4. Tighten the PCM electrical connector bolts (2) to 71 INCH lbs. (8 N.m).
  5. Install the PCM cover. See Figure.
  6. Install the engine harness clip to the PCM cover.
  7. Connect the negative battery cable.
  8. If a NEW PCM was installed, program the PCM.
  9. Perform the crankshaft position (CKP) system variation learn procedure.
  10. If necessary, reset the engine oil life monitor.
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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.