The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1988 Canadian GMC C1500 305 TBI w/TH400HD going into 1973 C20 Custom Crew Cab

dwmitchell61 · 09-01-2015, 01:11 PM

I took the tail shaft off of the TH400HD transmission to look at the VSS sensor. It looks as though the reluctor (trigger wheel) is pressed onto the tail shaft. Is this the case?

I may have to figure out what DRAC/buffer I need to purchase and program if the trigger wheel is not removable.

09-01-2015, 01:11 PM	#18
dwmitchell61 Registered User Join Date: Jul 2015 Location: Benton City, WA Posts: 37	Re: 1988 Canadian GMC C1500 305 TBI w/TH400HD going into 1973 C20 Custom Crew Cab I took the tail shaft off of the TH400HD transmission to look at the VSS sensor. It looks as though the reluctor (trigger wheel) is pressed onto the tail shaft. Is this the case? I may have to figure out what DRAC/buffer I need to purchase and program if the trigger wheel is not removable.