Brake Peddles stay depressed after pressing down. on 2001 Chevrolet Silverado 2500 HD

I recently changed the Hydro boost due to excessive power steering loss. I bled the Power steering and still no luck

Asked by for the 2001 Chevrolet Silverado 2500 HD
where did you buy hydraboost? poss bad if cheaper brand
1 more answer , 1 more comment
maybe your brake fluid is low...
I discovered that I failed to replace the pushrod assembly. I went back to the store and removed it from the old Booster. When replceing it I had the sprind depressed and it sslipped and I can not find the pushrod now.
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