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2007 Chevrolet Silverado - 4WD | Sierra, Silverado (VIN C/K) Service Manual | Bulletins By Category | Technical | Document ID: 2216135 <HR>
#08-06-04-054: Snow Intrusion into Air Cleaner, Check Engine Light On, Engine Reduced Power Message, DTC P0101 Set (Perform Repair as Outlined) - (Dec 3, 2008)

<TABLE border=0><TBODY><TR><TD vAlign=top width=100>Subject:</TD><TD vAlign=top>Snow Intrusion into Air Cleaner, Check Engine Light On, Engine Reduced Power Message, DTC P0101 Set (Perform Repair as Outlined)</TD></TR></TBODY></TABLE>​

<TABLE border=0><TBODY><TR><TD vAlign=top width=100>Models:</TD><TD vAlign=top>2007-2009 Chevrolet Silverado 2500/3500 Series</TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top width=100></TD><TD vAlign=top>2007-2009 GMC Sierra 2500/3500 Series</TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top width=100></TD><TD vAlign=top>Equipped with 6.6L Diesel Engine (VIN 6 -- RPO LMM)</TD></TR></TBODY></TABLE>

<HR><A title= href="">Condition

Some customers may comment on a check engine light illuminated with a message that displays Engine Power is Reduced on the DIC.
Upon further investigation, a scan tool may reveal DTC P0101 set in history or as current.
<A title= href="">Cause

This condition may be caused by snow getting ingested into the air cleaner box and restricting the air intake to the engine.
<A title= href="">Correction

  1. Verify the condition by questioning the customer as to when the condition occurs (during or right after a snow storm).

  1. <LI type=1>Using the new air cleaner cover, GM P/N 20821430, drill five 25 mm (1 in) holes in the cover as shown. <LI type=1>Install the emission label, GM P/N 19180225, to the new cover. <LI type=1>Remove the existing air cleaner cover and install the new cover with holes. Provide the customer with the original cover and instruct them to reuse for summer.
    [*]Instruct the customer to install the grille opening section only (1st design, 2 piece cover) of the winter front. If the customer has a one piece cover (2nd design) or no cover at all, obtain the grille opening section only, GM P/N 25822811 (GMC) or 25822812 (Chevy). The air cleaner cover with holes and the grille opening cover must be installed to ensure a complete repair. This repair allows warm air to be circulated into the air cleaner, which melts the snow.
<A title= href="">Parts Information

<TABLE border=1 width="95%"><TBODY><TR><TH vAlign=bottom align=middle>Part Number
</TH><TH vAlign=bottom align=middle>Description​

</TH></TR><TR><TD vAlign=center align=middle>20821430​

</TD><TD vAlign=center align=middle>Cover, Air Cleaner
</TD></TR><TR><TD vAlign=center align=middle>19180225
</TD><TD vAlign=center align=middle>Label, Emission
</TD></TR><TR><TD vAlign=center align=middle>25822811
</TD><TD vAlign=center align=middle>Cover, Radiator Grille Opening (GMC)
</TD></TR><TR><TD vAlign=center align=middle>25822812
</TD><TD vAlign=center align=middle>Cover, Radiator Grille Opening (Chev)
</TD></TR></TBODY></TABLE>Warranty Information

For vehicles repaired under warranty, use:
<TABLE border=1 width="95%"><TBODY><TR><TH vAlign=bottom align=middle>Labor Operation
</TH><TH vAlign=bottom align=middle>Description
</TH><TH vAlign=bottom align=middle>Labor Time
</TH></TR><TR><TD vAlign=center align=middle>J7926*
</TD><TD vAlign=center align=middle>Repair to Correct Snow Intrusion into Air Cleaner Box
</TD><TD vAlign=center align=middle>0.4 hr
</TD></TR><TR><TD vAlign=center colSpan=3>* This labor operation number is for bulletin use only. This number will not be published in the Labor Time Guide.
</TD></TR></TBODY></TABLE><TABLE width="95%"><TBODY><TR><TD width="80%" align=left>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.

</TD><TD width=42 align=middle> </TD><TD width=167 align=middle>WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
© 2009 General Motors Corporation. All rights reserved.

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