Kudos on fixing the vacuum leak.
The speed control issue is usually what's called the blower motor resistor. In some cases, they actually contain resistors; in other cases, it contains a more sophisticated electronic circuit for controlling the fan motor speed. Either way, as long as you get a "blower motor resistor", you should be fine.
Looking on Autozone's website, most of them are around 40 bucks, but there are two outliers: one at 12 bucks and another at 94.
The resistor is located near the fan, up above the passenger's feet, against the firewall.
Thanks I'll check those out. Fan speeds 1,2,3 are dead, fan only comes on in 4 and 5