Originally Posted by bamaboy22

found this one

#PIP4718B: Oil Leaks At Front Crankshaft Seal Area - (Feb 1, 2011)

Subject: Oil Leak At Front Crankshaft Seal Area

Models: 2008-2010 Chevrolet Cobalt SS
2008-2010 Chevrolet Cobalt
2008-2010 Chevrolet HHR
2008-2010 Chevrolet HHR SS
2008-2010 Chevrolet Malibu
2008-2010 Pontiac G5
2008-2010 Pontiac G6
2008-2010 Saturn Aura
2008-2010 Saturn Aura
Equipped with the following engines
2008-2010 2.0L (RPO LNF)
2009-2010 2.2L (RPO LAP/LE8)
2008-2010 2.4L (RPO LE5/LE9/LAT)

his PI was superseded to add 2010 model year. Please discard PIP4718A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
A technician may comment of an oil leak at the timing cover/front crankshaft seal area.

Recommendation/Instructions:
When the technician has determined the front crankshaft seal is leaking, replace the seal, harmonic balancer, bolt, and drive belt.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

#09-06-01-014: Oil Leak by High Pressure Fuel Pump (Reseal Camshaft Cap) - (Dec 3, 2009)

Subject: Oil Leak by High Pressure Fuel Pump (Reseal Camshaft Cap)

Models: 2007-2009 Chevrolet Cobalt SS, HHR SS
2007-2009 Pontiac Solstice GXP
2007-2009 Saturn SKY Redline
2008-2009 Opel GT
2008 Daewoo G2X
Equipped with a RPO LNF Engine
Please Refer to GMVIS

Condition
Some customers may comment on an oil leak.

Upon further investigation, a technician may find oil leaking from the high pressure fuel pump area.

Cause
This condition may be caused by a camshaft cap that is not sealed correctly to the cylinder head, causing oil to leak out.

Correction
1. Verify the customer's concern.
2. Remove the fuel pump. Refer to Fuel Pump Removal in SI.
3. Remove the camshaft cover. Refer to Camshaft Cover Removal in SI.



4. Remove the camshaft cap (1). Remove all excess sealing material from both surfaces.




Note: It is critical during installation to ensure the bearing rear cap and cylinder head alignment is correct and the mating surfaces are flush.
• Ensure that all sealing material has been removed from the components and the sealing surfaces are clean and free of contamination prior to applying the sealer.
• Install and align the rear cap within 20 minutes of applying the sealer.

5. Apply a 2.5 mm (0.1 in) bead of sealer, GM P/N 12378521 (in Canada, use P/N 88901148) to the cylinder head at the number 6 intake camshaft rear cap mating surface.

Note: Apply the sealer to all locations centrally locating the bead on the rail.
• Run the bead to 5 mm (0.2 in), dimension “a”, as shown.
• Where the cap ends on the perimeter rail, extend bead approximately 4 mm (0.2 in) beyond edge of cap.
• Run bead, dimension “c”, 32 mm (1.3 in) from the edge of the cylinder head as shown.
• Run bead, dimension “b”, 20 mm (0.8 in) from edge of cylinder head as shown.

6. Install the number 6 intake camshaft rear cap.
6.1 Tighten the cap bolts evenly to 5 N·m(44 lb in).
6.2 Tighten the cap bolts evenly to 10 N·m(89 lb in).
6.3 Back the cap bolts out 120 degrees.
6.4 Tighten the cap bolts evenly a final pass to 10 N·m(89 lb in).
7. Install the camshaft cover and gasket, GM P/N 12609291. Refer to Camshaft Cover Installation in SI.
8. Install the fuel pump. Refer to Fuel Pump Installation in SI.
Important: When installing the fuel pump, install a NEW high pressure fuel pump O-ring (GM P/N 12600313), high pressure fuel pump gasket-to-cylinder head (GM P/N12595951) and high pressure fuel pipe (GM P/N12615401).
Parts Information


Part Number


Description


12609291


Camshaft Cover Gasket


12595951


Gasket, High Pressure Fuel Pump Gasket


12600313


High Pressure Fuel Pump O-Ring


12615401


High Pressure Fuel Pipe


12378521 (U.S.)

88901148 (Canada)


Silicone


Warranty Information
For vehicles repaired under warranty, use:



Labor Operation


Description


Labor Time


J7549*


Reseal Camshaft Cap


2.6 hrs


*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide


GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION


and i get paid pretty good for it lol

Originally Posted by Jsal

Do we really gotta replace the hpfp fuel pipe? Or is that highly recommended? Could I just do all the gaskets this bulletin list and not the fuel pipe?

Originally Posted by tomj77

Ur suppose to. I didn't a few times with no issues but I'd rather be safe then sorry, change it. There is 2k plus psi going to that pipe, u don't want it to fail or leak