Air Filter Housing Question - '92 Chev K1500

[TheGreatCanadian]

Hey everybody! Brand new to the forums so pardon my jumping right into it. I just bought my second GM truck, this time its a '92 Z71 with a TBI'd 350!

 

I went to go inspect the air filter and I couldn't get the cover off the housing, its very much almost fused on there. The truck was well cared for before I bought it but little was done to the engine except for changing fluids and other basic maintenance. Is there a special trick to open up the housing without taking the entire thing off the throttle body? Or am I better off just scrapping the old one and grabbing a new off Summit Racing or something.

Any help is appreciated! I've tried everything to get the darn thing off

Edited May 8, 2015 by TheGreatCanadian

[Super 8]

There is a rubber seal on the lid that sticks pretty good, should pry apart.

If it's the picture in your profile, it would be a 94 model year.

[TheGreatCanadian]

I'll try that, maybe just going at it with a bit more brute force will do the trick. I updated my picture actually, that red one was just a placeholder but that's my truck there now. This is what the motor looks like currently and then a front shot.

 

 

[Super 8]

After removing the wing nut, the whole assembly will lift out if you want to tackle it that way.

What is the button/switch on the upper left corner of the vehicle under the hood?