[detroitdouglas]

I have a 98 and the heat sucks. Other than the themerstat what could help? And I have what feels like the rear end binding up when taking off and turning at a slow speed what could be an eazy fix for that? And my speedo does not work I have RPM's but no speed other than the sensor on the trans what could it be? Because my brake and ABS lights are on also could there be a wheel speed sensor or something to do with the ABS system? Any help would be great because my girlfriend did not take great care of this truck through the years and I just started to drive it about 5 months ago.