GM Service Manual Online
For 1990-2009 cars only

Transmission Vent Removal for GMC Truck TopKick C-Series (Conventional) C4/C5 2003


    Object Number: 1216973  Size: SH
  1. Gently pry the vent (2) from the transmission case.
  2. If the vent cap (1) comes off, gently pry the stem from the transmission case.