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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 93 (AUTOMATIC TRANSMISSION SERVICING)REMOVAL & INSTALLATIONLOWER CONTROL VALVE BODY ASSEMBLY (4T80-E)INSTALLATION
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Lower Control Valve Body Assembly (4T80-E): Installation

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Place the lower controls assembly over the forward support studs. The bolts (958) without the flange are located next to the oil transfer plate. See Figure .
  2. Hand start the bolts into the channel plate. Install the 2 nuts (955) on the forward support studs. Place the oil transfer plate (956) over the open gasket area. See Figure .
  3. Position the lower control valve body wire harness retaining clips (943). See Figure .
  4. Hand start the bolts (534) to hold the oil transfer plate (956) in place with the lower control valve body wire harness retaining clips (943) attached properly. See Figure . Tighten the bolts and nuts (534) to 6-10 ft. lbs. (8-14 N.m).
RENDER: 1.0x

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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.