The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 99 5.3 4L60E speedo freaks out tranny freaks out..not VSS

clinebarger · 07-07-2012, 07:38 PM

I responded to you in this thread http://67-72chevytrucks.com/vboard/s...d.php?t=441767

Did you check the VSS wiring? Im 90% positive you have wiring issue.

The VSS sensor sends a signal to the PCM...The PCM sends a signal to the cluster/speedo. The problem is between the VSS & PCM.

07-07-2012, 07:38 PM	#4
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 99 5.3 4L60E speedo freaks out tranny freaks out..not VSS I responded to you in this thread http://67-72chevytrucks.com/vboard/s...d.php?t=441767 Did you check the VSS wiring? Im 90% positive you have wiring issue. The VSS sensor sends a signal to the PCM...The PCM sends a signal to the cluster/speedo. The problem is between the VSS & PCM.