2003 GMC Sonoma Owner's Manual - Page 283

Engine Air CleanedFilter 4300 V6 Engine 2200 L4 Engine The engine air cleanedfilter for both the 2200 L4 engine and the 4300 V6 engine are both located in the front of the engine compartment on the driver's side of the vehicle. See Engine Compartment Overview on page 12 for 5more information on location. To remove either engine air cleaner/filter, do the following: 1. Remove the fasteners that hold the cover on and remove the cover 2. Lift out the engine air cleaner/filter, if needed. 5-20