Map sensor, need asap

I got a code 34 on my 93 Bravada. Means the mpa sensor is bad. I know where its but wanted to know if this will cause it to serge and stall at idle. It runs rough at speed but does ok.

Yes, and make sure the hose is attached and has vacuum to it.

There is no hose it attaches direct to the intake manafold, but thanks for you help in this. Ill let you know what happens