If this one flies for GM, we may see other car makers following...

"SERVICE - ALL BUICK, CADILLAC, CHEVROLET, GMC TRUCK, ISUZU, OLDSMOBILE, PONTIAC AND HUMMER DEALERS


Subject: A/T Shift, Engine Driveability Concerns or SES Light On as a Result of the Installation of an Aftermarket Reusable, Excessively Oiled Air Filter -- 2004 and Prior Cars and Lt Duty Trucks and 2003-2004 HUMMER H2
Message #: VSS20040056

Corporate Bulletin Number 04-07-30-013 will be available in SI on March 18, 2004.

Automatic Transmission Shift, Engine Driveability Concerns or Service Engine Soon (SES)
Light On as a Result of the Installation of an Aftermarket Reusable, Excessively Oiled Air Filter

Models: 2004 and All Prior Cars and Light Duty Trucks
2003-2004 HUMMER H2

DO THIS
First, Inspect the vehicle for a reusable aftermarket excessively oiled air filter

DON'T DO THIS
DO NOT repair under warranty if concerns result from the use of a reusable aftermarket oiled air filter.

The installation of an aftermarket reusable, oiled air filter may result in:

1. Service Engine Soon (SES) Light On

2. Transmission shift concerns, slipping and damaged clutch(es) or band(s)

3. Engine driveability concerns, poor acceleration from a stop, limited engine RPM range

The oil that is used on these air filter elements may be transferred onto the Mass Air Flow (MAF) sensor causing contamination of the sensor. As a result, the Grams per Second (GPS) signal from the MAF may be low and any or all of the concerns listed above may occur.

When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively oiled air filter. The MAF, GPS reading should be compared to a like vehicle with a OEM air box and filter under the same driving conditions to verify the concern.

Transmission or engine driveability concerns that are the result of the installation of an aftermarket reusable, excessively oiled air filter are not considered to be warrantable repair items. "

 

Stick with a "disposable" cone filter and dont worry about oil at all.

 

Is there a certain brand to go with for the disposable cone filters?

 

Properly clean, oil and rotate your filter and you wont have a problem. It happens when people put too much oil on the filter and also dont rotate the filters (yes, gravity effects the oil, no oil = 'dead' section in the filter).

 

MrGone,

Even BRAND NEW straight out of the packaging K&N filters have contaminated MAFs here and killed them.

It's definitely something to worry about.

 

Apexi seems to be the dry filter of choice.

 

I've been using K&N for almost 10 years. Have had absolutely no problems. Even a novice would notice too much oil on the filter. And spending that much $ to replace the Apexi every x amount of miles is ridiculas.

 

I've been running K&N, since I was 6 or so IIRC, and will continue to do so.

However, my point being, it's NOT just people over oiling them, since at least one that I recall was out of the packaging. You have to check them, even when new.

Agree on the Apexi.

 

Greddy also makes dry filters. Good quality, expensive price.

 

I've blown my MAF twice once with K&N and once with Apexi. I don't think the oil is the problem with the 02 MAF's

 

I don't know why would a after market Filter Damage the Tranny? they are talking about it. After Market filters, are not like super charger or Turbo. I could see a super charger or turbo blow out the tranny. I can't see a after market oil filter do that..... I don't know i could be wrong.....


DON'T DO THIS
DO NOT repair under warranty if concerns result from the use of a reusable aftermarket oiled air filter.

The installation of an aftermarket reusable, oiled air filter may result in:

1. Service Engine Soon (SES) Light On

2. Transmission shift concerns, slipping and damaged clutch(es) or band(s)

3. Engine driveability concerns, poor acceleration from a stop, limited engine RPM range

The oil that is used on these air filter elements may be transferred onto the Mass Air Flow (MAF) sensor causing contamination of the sensor. As a result, the Grams per Second (GPS) signal from the MAF may be low and any or all of the concerns listed above may occur.

When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively oiled air filter. The MAF, GPS reading should be compared to a like vehicle with a OEM air box and filter under the same driving conditions to verify the concern.

Transmission or engine driveability concerns that are the result of the installation of an aftermarket reusable, excessively oiled air filter are not considered to be warrantable repair items. "

 

I understand the 2k2 MAFS have had some issues, I'm not 100% sure what causes it (example: Matt's post) but I know there is definately a problem (cough Larry/ChinaOnNitrous1 ).

I put an Injen on my dads 2000 SE 5spd maybe 9 months ago, haven't had a problem with it at, along with my 92SE.

As for the whole Oiled filter/tranny thing, the new Chevies might not use a kick down cable anymore. I am fairly certian that my stepdads 99 Surburban still has a kickdown cable though.

 

Yeah but those bishes cost too much to keep replacing. I'm going back to the stock setup (already hacked the lower box) and going to start buying the Fram Racing Filter.