- Joined
- August 3, 2000
- Messages
- 31,716
- Reaction score
- 8,373
- City, State
- NORTH IDAHO, 7B
- Year, Model & Trim Level
- B2 "Slightly" Modified
- Callsign
- FOURTEN
99 with rabs the speedo might still work because it is RABS
the 4WABS systems 98+ the ABS computer does the smoothing for the speedometer signal, meaning the abs computer takes the VSS signal from the rear axle and buffers the math down to the 8000 pulses per mile the GEM, cluster and PCM want to see
the 91-97 trucks still had a VSS in the tailhousing, which produced the 8000 pulses per mile, so those trucks are good
The RABS trucks the GEM module still does the math I believe
If you remove the ABS module and are left with no speedo then we need to add in a a Dakota Digital speedometer device, not a huge deal these days, can even use GPS enabled devce
the 4WABS systems 98+ the ABS computer does the smoothing for the speedometer signal, meaning the abs computer takes the VSS signal from the rear axle and buffers the math down to the 8000 pulses per mile the GEM, cluster and PCM want to see
the 91-97 trucks still had a VSS in the tailhousing, which produced the 8000 pulses per mile, so those trucks are good
The RABS trucks the GEM module still does the math I believe
If you remove the ABS module and are left with no speedo then we need to add in a a Dakota Digital speedometer device, not a huge deal these days, can even use GPS enabled devce