Silverado 2500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
1. Lubricate and install NEW O-rings onto the regulator. Lubricate the O-rings with clean, NEW engine oil.
IMPORTANT: If the regulator is installed at an angle the O-rings may be damaged, resulting in possible fuel leakage.
2. Install the fuel pressure regulator (1).
NOTE: Refer to Fastener Notice in Service Precautions.
3. Install the 3 fuel pressure regulator screws (1) using a T25 TORX(R).
Tighten
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Tighten the screws a first pass to 4 N.m (35 lb in).
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Tighten the screws a final pass to 7 N.m (62 lb in).
