Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 18 (AUTOMATIC TRANSAXLE SERVICING)REMOVAL & INSTALLATIONLOWER VALVE ASSEMBLYINSTALLATION
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Lower Valve Assembly: Installation
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Installation
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
- For reassembly of the lower control valve body assembly, see appropriate OVERHAUL article.
- Install the lower valve assembly (consisting of the channel plate, control valve body, accumulator assembly, and the wire harness extension) to the transaxle case as a single unit.
- 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 .
- Hand start the bolts and nuts to the lower valve assembly. Install the oil transfer plate. Position the wire harness extension retaining clip over the appropriate bolt hole in the oil transfer plate. See Figure .
- Position the lower control valve body wire harness retaining clips (943). See Figure .
- Hand start the bolts to the oil transfer plate. See Figure . Tighten the bolts and nuts (534) to specification. See TORQUE SPECIFICATIONS .
- Insert the manual valve link (913) into the inside detent lever (17). See Figure . Clip the manual valve link retainer (915) onto the manual valve link (913).
- Connect the wire harness extension to the wire harness assembly. Install the bottom pan and seal, the scavenger screens, and the lip seals. See DRAINING & REFILLING under LUBRICATION.
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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.