GM-GMC: truck issue, vacuum leak, vacuum line

Question
My husband is having a problem with his 1994 z71 chevy truck, it has a 4L60 automatic transmission, he says it has a slow pickup until it reaches 10 mph then it is fine, he is wondering if its a vac hose leak or something do you know? Also do you know anywhere online we can find a diagram of the vacuum line hoses in this truck? He wants to see where they all connect.motor is 5-7 v8 if that helps any.Thanks

Answer
There is usually an emissions sticker under the hood somewhere.  Sometimes on the upper rad area or sometimes on the backside of the hood itself,  I have no access to a digital version of that diagram to send to you.  As for the hesitation, a vacuum leak would likely have some other symptoms along with it.  I would start by checking the timing.
Hope this helps