GM Full Size Vans 1987-1997 Repair Guide

Air Cleaner

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See Figures 1 through 4



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Fig. Fig. 1: Exploded view of the air cleaner housing - 1987-92 gasoline engines except the 7.4L



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Fig. Fig. 2: Exploded view of the air cleaner housing - 1987-92 7.4L engine



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Fig. Fig. 3: Exploded view of the air cleaner housing - 1993-95 gasoline engines



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Fig. Fig. 4: Exploded view of the air cleaner housing - 6.2L diesel engine

The element should be replaced at the recommended intervals shown in the Maintenance Intervals chart later in this section. If your van is operated under severely dusty conditions or severe operating conditions, more frequent changes will certainly be necessary. Inspect the element at least twice a year. Early spring and early fall are good times for inspection. Remove the element and check for any perforations or tears in the filter. Check the cleaner housing for signs of dirt or dust that may have leaked through the filter element or in through the snorkel tube. Position a droplight on one side of the element and look through the filter at the light. If no glow of light can be seen through the element material, replace the filter. If holes in the filter element are apparent or signs of dirt seepage through the filter are evident, replace the filter.

REMOVAL & INSTALLATION



See Figures 5 through 9



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Fig. Fig. 5: Exploded view of the air cleaner assembly - 1996-97 models

  1. On early model vehicles, remove the wingnut(s) and lift off the housing cover. On late model and 6.5L diesel vehicles, lift the wire tabs to release the retaining clips and separate the two case halves.
  2.  
  3. On the 6.5L diesel, position the cover with the air cleaner flexible hose off to the side.
  4.  



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Fig. Fig. 6: Unsnap the air cleaner housing clips and separate the two halves ...



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Fig. Fig. 7: ... then remove the filter element from the housing

  1. Withdraw the element from the housing and discard it.
  2.  
  3. With a clean rag, remove any dirt or dust from the front cover and also from the element seating surface.
  4.  

To install:
  1. Position and install the new filter element so that it seats properly in the housing.
  2.  
  3. On the 6.5L diesel, position the cover with the attached hose over the element and snap the retaining clips into place. On all other engines, install the housing lid and tighten the wingnut(s) to about 18 inch lbs. (2 Nm) and fasten the retaining clips.
  4.  


WARNING
Do not drive the vehicle with the air cleaner removed. Doing so will allow dirt and a variety of other foreign particles to enter the engine, causing damage and wear. Also, backfiring could cause a fire in the engine compartment.



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Fig. Fig. 8: On newer vehicles, lift up the air cleaner cover - 1996 van shown



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Fig. Fig. 9: Remove the filter element - 1996 van shown

 
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