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. When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively oiled air filter. 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. 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. Transmission shift concerns, slipping and damaged clutch(es) or band(s)Įngine driveability concerns, poor acceleration from a stop, limited engine RPM range The installation of an aftermarket reusable, oiled air filter may result in: DO NOT repair under warranty if concerns result from the use of a reusable aftermarket oiled air filter. Info - 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 #04-07-30-013 - (Mar 5, 2004)Ģ004 and Prior Cars and Light Duty Trucksįirst, Inspect the vehicle for a reusable aftermarket excessively oiled air filter.
Here's a TSB from GM you might want to read:
If they worked, they'd already be installed by GM at the factory.
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