1st. gear only
'98 1500 with 5.9 and auto trans. will not shift out
of first gear. Also, the speedometer don't work.
Could these problems be caused by the thing? Any
suggestions as to where to start is appreciated.
The most common is the VSS, but have the codes pulled to verify and too see if there any other problems lurking in there.
...but the "check engine "light isn't on. Will any codes still shoe up?
Possibly, they will be memory codes. But if nothing shows up then you may need to have the system live data scanned, then the tech can actually see what is going on and if any of the sensors or actuators are out of specs be able to replace them and double check the systems performance.