Turbocharger Installation

1. Install the turbocharger on the exhaust manifold and the studs.

NOTICE: Refer to Fastener Notice in Service Precautions.

2. Install the nuts to the exhaust manifold.
Tighten the exhaust manifold mounting nuts to 58 Nm (43 ft. lbs.).





3. Install the gasket on the oil return pipe.





4. Install the oil return pipe to the bottom of the turbocharger.
Tighten the oil return pipe bolts to 26 Nm (19 ft. lbs.).

IMPORTANT: Fill the oil feed hole at the top of the turbocharger with a small amount of the engine oil while rotating the compressor wheel by hand. This action will lubricate the turbocharger shaft bearings.

5. Install the oil feed hose at the turbocharger and the block.
Tighten the oil feed hose fittings to 28 Nm (21 ft. lbs.).





6. Install the oil return pipe with the hose and the clamps at the block.

IMPORTANT: Apply the silicone sealant GM P/N 9985943 or the equivalent to the turbocharger outlet hose before installing onto turbocharger.

7. Install the outlet hose and the clamp on the turbocharger.
Tighten the connector hose clamps to 6 Nm (50 inch lbs.).
8. Install the long and the short turbocharger braces.
- Tighten the long turbocharger brace nut to 34 Nm (26 ft. lbs.).
- Tighten the long turbocharger brace bolt to 50 Nm (37 ft. lbs.).
- Tighten the short turbocharger brace bolts to 25 Nm (19 ft. lbs.).





9. Install the grommet (4) in the valve rocker arm cover.
10. Install the CDR (Crankcase Depression Regulator) assembly (1) in the valve rocker arm cover.