Where is the speed sensor on a truck 94?
Where is the speed sensor on a truck 94? The 2nd speed sonsor in the trans is a dummy to fill the hole. 91-93 4X4's and 2X4's used that hole for an output speed sensor, but 94+ 4X4's used the one in the transfer case. The VSSB is the white box behind the glove box that runs the speedo and feeds the output speed sensor reading to the ECM (and radio for SCV on 95+ trucks). Why is my speedometer not working on my truck? Sounds like you have a broken wire or loose conenction between the VSSB and cluster...