First, unplug the MAF sensor
Undo the circular clip on the air intake - use a 7mm socket
Now release the air intake
Undo the 4 Phillips retaining fixings
Carefully lift away the air filter box
View of the air filter cover
Clean off any debris on the surface of the filter. Replace with a new filter if heavily contaminated
Check air filter box for debris. Clean if required. Now you can replace the air filter
Rebuild the air filter assembly
Find a Haynes product for your Vauxhall:
Search by registration mark
Search by make & model