hi all, ive been lurching around this site for awhile and am always able to find the info I need , but this one has me stumped, I just picked up 89 sub, its got ecm code relating to vss sensor and electronic spark control. 1. so are vss codes associated with the sensor or the vss buffer? 2. it has cable speedo, and manual says speed sensor should be located behind instrument cluster, so I get back there and all I see is speedo cable going into instrument cluster, no sensor, I do see a sensor on the transfer case up high near shift linkage is this it? 3. it looks like at sometime it had cruz contol, theres a vaccum switch down near the brake pedal, so when you have your foot on the brake you hear vaccum noise, the cruzcontrol canister up near the tbi has been remove, so can I ditch the vacum switch near the brake pedal? any help would be great.