LMM Snowy air intake

duramaximizer · Feb 2, 2011

Anyone have a solution to the snow in the LMM air intake? Mine is not extremely bad, but still getting snow in the air filter. Is there actually a FIX for this?

Theunderlord · Feb 2, 2011

I thought there was a TSB or something? Here's some info on it (borrowed from DF)

gr8shot · Feb 2, 2011

Just run your winter front. That should fix it for most trucks. My IAT's on the highway last night were between 50*F and 90*F doing 60mph with the outside temp right around -5*F to 0*F. I think 90*F air will melt and dry out any snow that makes its way in.

I just have the grill cover, not even the bumper cover and it works great for me.

Colt · Feb 3, 2011

Just put a plastic coffee can lid in the fender inlet over that with zip ties to stay real good. Other option is take off lid over filter snow blows out or underhood air will blow it out of box area Up North guys say.

MadMaxx61 · Feb 3, 2011

Best solution I found was just get a S&B or other filter setup.

ripmf666 · Feb 3, 2011

This is the new repair I liked the old one better

Service Information

<FORM onsubmit="JavaScript: return true;" method=post name=CellHandlerForm action=/si/cellHandler.do>Document ID: 2380784 <HR>
#08-06-04-054A: Snow or Ice Ingestion into Air Cleaner Element, Malfunction Indicator Lamp (MIL) Illuminated, Engine Power is Reduced Message Displayed, DTC P0101 Set (Perform Repair as Outlined) - (Jan 7, 2010)

<TABLE border=0><TBODY><TR><TD vAlign=top width=100>Subject:</TD><TD vAlign=top>Snow or Ice Ingestion into Air Cleaner Element, Malfunction Indicator Lamp (MIL) Illuminated, Engine Power is Reduced Message Displayed, 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>2007-2010 Chevrolet Silverado 2500/3500 Series</TD></TR></TBODY></TABLE>

<TABLE border=0><TBODY><TR><TD vAlign=top width=100></TD><TD vAlign=top>2007-2010 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 Duramax™ Diesel Engine (RPO LMM) </TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top width=100></TD><TD vAlign=top>Please Refer to GMVIS </TD></TR></TBODY></TABLE>

<HR>This bulletin is being revised to remove the graphic, update the Parts and Correction information and add information to advise a customer. Please discard Corporate Bulletin 08-06-04-054 (Section 06 -- Engine / Propulsion System).

<HR><A title=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element,+Malfunction+Indicator+Lamp+(MIL)+Illuminated,+Engine+Power+is+Reduced+Message+Displayed,+DTC+P0101+Set+(#ss1-2380784 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element%2C+Malfunction+Indicator+Lamp+%28MIL%29+Illuminated%2C+Engine+Power+is+Reduced+Message+Displayed%2C+DTC+P0101+Set+%28#ss1-2380784">Condition

Some customers may comment on the malfunction indicator lamp (MIL) being illuminated and an Engine Power is Reduced message being displayed.
The technician may observe DTC P0101 set as current or in history.
<A title=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element,+Malfunction+Indicator+Lamp+(MIL)+Illuminated,+Engine+Power+is+Reduced+Message+Displayed,+DTC+P0101+Set+(#ss2-2380784 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element%2C+Malfunction+Indicator+Lamp+%28MIL%29+Illuminated%2C+Engine+Power+is+Reduced+Message+Displayed%2C+DTC+P0101+Set+%28#ss2-2380784">Cause

This condition may be caused by snow being ingested into the air cleaner housing and accumulating in the air cleaner element, resulting in restricted airflow into the engine.
<A title=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element,+Malfunction+Indicator+Lamp+(MIL)+Illuminated,+Engine+Power+is+Reduced+Message+Displayed,+DTC+P0101+Set+(#ss3-2380784 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element%2C+Malfunction+Indicator+Lamp+%28MIL%29+Illuminated%2C+Engine+Power+is+Reduced+Message+Displayed%2C+DTC+P0101+Set+%28#ss3-2380784">Correction

Verify the condition by questioning the customer as to when the condition occurs (such as during or right after a snow storm).
<TABLE border=0><TBODY><TR><TD vAlign=top>⇒</TD><TD vAlign=top>If the condition occurs as described above, proceed to Step 2.</TD></TR></TBODY></TABLE>

<TABLE border=0><TBODY><TR><TD vAlign=top>⇒</TD><TD vAlign=top>If the condition does not occur as described above, refer to Diagnostic Trouble Code (DTC) List Vehicle in SI.</TD></TR></TBODY></TABLE>

<LI type=1>Remove the air cleaner element. Refer to Air Cleaner Element Replacement in SI. <LI type=1>Inspect the air cleaner element for the following conditions:
<TABLE border=0><TBODY><TR><TD vAlign=top>3.1. </TD><TD vAlign=top>Packed snow</TD></TR></TBODY></TABLE>

<TABLE border=0><TBODY><TR><TD vAlign=top>3.2. </TD><TD vAlign=top>Frozen ice</TD></TR></TBODY></TABLE>

<TABLE border=0><TBODY><TR><TD vAlign=top>3.3. </TD><TD vAlign=top>A soaking wet condition that would indicate previous snow ingestion</TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>3.4. </TD><TD vAlign=top>Excessive debris and contamination as a result of the ingestion</TD></TR></TBODY></TABLE>
<TABLE border=0><TBODY><TR><TD vAlign=top>⇒</TD><TD vAlign=top>If any of the above conditions are observed, replace the air cleaner element. Remove any snow or ice that may have accumulated in the air intake duct. </TD></TR></TBODY></TABLE>

Note: Winter covers for trucks that are equipped with the Duramax™ Diesel Engine are included with vehicle orders that ship to the following areas: All of Canada, and the following states: Alaska, Colorado, Idaho, Maine, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, South Dakota, Vermont, Wisconsin, Wyoming. These vehicles should not need a new cover.

<LI type=1>Install the grille opening section ONLY (if using the 2 piece cover) of the winter front cover following the usage guidelines provided in the Owners Manual for the appropriate type winter cover.
<TABLE border=0><TBODY><TR><TD vAlign=top>⇒</TD><TD vAlign=top>If the customer does not have a cover, obtain and install the grille opening section ONLY , GM P/N 25822811 (GMC) or GM P/N 25822812 (Chevrolet). </TD></TR></TBODY></TABLE>
[*]The grille opening cover MUST BE installed to ensure a complete repair, BEFORE ENCOUNTERING SNOW . This repair allows warm air to be circulated into the air cleaner.

<A title=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element,+Malfunction+Indicator+Lamp+(MIL)+Illuminated,+Engine+Power+is+Reduced+Message+Displayed,+DTC+P0101+Set+(#ss4-2380784 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element%2C+Malfunction+Indicator+Lamp+%28MIL%29+Illuminated%2C+Engine+Power+is+Reduced+Message+Displayed%2C+DTC+P0101+Set+%28#ss4-2380784">Additional Information to Advise Customer

Important: If the vehicle is driven in a snow storm before installing the winter cover and the customer chooses to resolve the issue, they must follow this procedure using the following steps:

<LI type=1>Remove ANY ice or snow that may have accumulated in the air intake duct, BEFORE REPLACING the air cleaner element. <LI type=1>INSTALL the winter cover BEFORE continuing to drive the truck. <LI type=1>Turn OFF the ignition, and all electrical accessories and components. <LI type=1>Remove the key from the vehicle, THEN open and close the door.
WAIT for 2 minutes to allow the engine control module (ECM) to power down. This can be verified by watching for the instrument panel cluster (IPC) gage needles to drop slightly.

<TABLE border=0><TBODY><TR><TD vAlign=top>5.1. </TD><TD vAlign=top>Allowing the ECM to power down will let DTC P0101 revert to a History DTC and the vehicle should return to full power if the issue has been eliminated.</TD></TR></TBODY></TABLE>

<TABLE border=0><TBODY><TR><TD vAlign=top>5.2. </TD><TD vAlign=top>Advise the customer to take the vehicle to the dealer as soon as possible to verify the condition has been eliminated. </TD></TR></TBODY></TABLE>

<A title=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element,+Malfunction+Indicator+Lamp+(MIL)+Illuminated,+Engine+Power+is+Reduced+Message+Displayed,+DTC+P0101+Set+(#ss5-2380784 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2380784&releaseDate=2010-01-07&name=Snow+or+Ice+Ingestion+into+Air+Cleaner+Element%2C+Malfunction+Indicator+Lamp+%28MIL%29+Illuminated%2C+Engine+Power+is+Reduced+Message+Displayed%2C+DTC+P0101+Set+%28#ss5-2380784">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>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 (Chevrolet)

</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 is a unique labor operation for bulletin use only. It 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

</TD></TR></TBODY></TABLE>

© 2010 General Motors. All rights reserved.
</FORM>

ripmf666 · Feb 3, 2011

This was the old repair they did before

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Service Information
<FORM onsubmit="JavaScript: return true;" method=post name=CellHandlerForm action=/si/cellHandler.do>

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=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss1-2216135 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss1-2216135">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=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss2-2216135 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss2-2216135">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=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss3-2216135 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss3-2216135">Correction

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

<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=http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss4-2216135 href="http://gsi.xw.gm.com/si/showDoc.do?docSyskey=2216135&from=bcpi#ss4-2216135">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