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VSS Speedo Control

1K views 2 replies 3 participants last post by  RippinRon 
#1 ·
First question, does the VSS control the speedo? I think so but just covering all bases here. :rolleyes: I have a TH350 with a speedo cable, but, I need the VSS so I can run it with my LT1 in my '89 Firebird.
 
#2 ·
Not sure about '89's, but '87 GM's have the VSS unit behind the dash and the speedo is still cable operated. The VSS sends a signal to the ECM for TCC lockup and (possibly) other functions. You should be OK, but consult a shop manual to be sure...

Russ
 
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