Hey I just received this via email from an inside gm connection. I thought I would share this and see what people think. Sorry it's so long:
Found it on the Corvette Tech Center site..

GM Denies Warranty On Oiled Air Filter Cars

Anyone heard about this? The TRAP may have to go.....

The following is a memo from GM stating the use of rechargeable air
filters may cause transmission shift problems, engine driveability
problems & SES Light On problems (throwing codes). It also states these
problems will NOT be covered under warranty. Yes, in part of the memo, it
states "excessively oiled" filters. But for the most part, it reads any
use of this type of filter & these issues won't be covered.

quote:
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.
__________________

 

That's been around for a while now. Just keep the paper one, and pop it in when it goes to the shop.

 

I didn't know about till this morning. My dad works at GM and emailed it to me today. I think he did that because I just installed an Airaid CAD this week. I kept my box and filter and figured in 10mins I can have it back in if I throw a code or have other issues.

 

Sorry, I'm not saying the email is old, I ment that's been an issue for a while now.

 

No offense taken. I think my dad was just warning me.

 

This part is BS! If you have a factory defective MAF you are screwed! They should clean the MAF, see if that doesn't fix the problem. If not then it wasn't the air filter oil causeing the problem. If it does fix the problem, charge them for it.

 

I recall from an article I read last year in a hotrod auto mag that the wires in the MAF are heated and cook the oil onto themselves, thus making it un-cleanable and permanantly damaged.

Dunno...just something I remember reading...

 

I may just be stupid... but how in the hell does an air filter cause transmission slippage? Did I misread something?

 

I was wondering about that,too.

 

Thats why i kept my stock one..