Where the heck is the ESC module?

I am taking a trip to Canada Friday and need to replace the electronic spark control module. I had the code for that and the knock sensor. The knock sensor was replaced and I still have the code. I bought a new ESC module but I can't find it anywhere. The Haynes manual says it is mounted on the intake near the throttle body but I can't find it. My truck is a 94 K1500 with the 5.7L. Any help before friday would be great. Thanks guys!!

I will try to make this short and help everyone who has had the same problem. The Haynes manual and Autozone and Advanced auto all show a ESCM for my Suburban. After more reserch by one of the Autozone reps I found out that it doesn't actually have one. In a Haynes electrtonics manual that listed the code 43 which is what I have it showed that the ESC module listed for my truck is only on Buick and Cadillacs that year. So, for you guys that can't find it either, that is why. I replaced my knock sensor a month ago and still had the code coming up. So I assummed it was the ESC. After more investigation I found the back side of the plastic wire covering was burnt. When I disconnected the wire from the knock sensor it came out in 2 pieces. I reconnected the wire and it works fine.