'94 2500 suburban w/ 350 & 4l80e. Pulled the truck in to change the oil, and when I backed it out, the abs light was on. Figured nbd, but the burb wont shift out of 1st gear until higher rpm and when it does, its a very positive shift. Speedo also does not work. Did the paperclip thing and got a speed sensor code. Put a new sensor in at the tcase and still same issues. Replaced the trans sensor(front sensor on drivers side of transmission) and replace the drac module with a known "good" one off ebay, still no luck. Unbolted the harness off the bellhousing and no rubbed areas seen and crawled under the dash looking for any obvious wiring issues. What am I missing? The code numbers I'm getting is are 44 and 24. These aren't that complicated. I will add that up until this point, I drove this old suburban a lot. I would appreciate any help. Thanks
Last edited: