Reverse lights don't work

Reverse clutches gone rear hub Asembly in back of trans also u should have no low gear or weak on probably don't take off forward like it use to

Do you have power coming out of the reverse circuit on the neutral safety switch ? Or the reverse switch if the truck has a manual trans ?

Could be a dirty throttle body or faulty idle air control valve.
Is the check engine light on ?

the throw out bearing is bad ,so change bearing and clutch

if its 5 speed trans,try replacing the reverse light switch on the trans,it is located on top of the trans under the battery,,like $16 part,they go bad alot

it depends if it is auto or manual. There is a nuetral saftey switch on the auto-located on the manual valve arm(the piece that the linkage from the shifter connects to at the trans.) On the manual trans. there will be a 2 pole switch on the top shift plate that is for reverse only. The starting(clutch engagement switch)is located at the clutch pedal-2 seperate switches. First check for power at the back up light bulb connecter with reverse engaged(may have power at all times when key is on). Then check for ground when reverse is engaged-from bulb connecter to ground) with reverse engaged. The switch will just provide the ground when reverse is engaged. The power comes from an alternate source. Most likley a switch issue but at least this way you can be sure.

Not without a little adapting. The 1993 has a 4l60e which is electronically controlled and has shift solenoids. If the 83 is an overdrive it is a 700r4 which is the same trans but not electronic. If you put it in the speedo wont work and you will need to install a T.V. cable so the transmission will shift. The 93 won't go forward or backwards?

sounds like the transfer case needs to be overhauled, the clicking is the clincher.

what color is the inside of the trans connector on the trans itself? I believe the 93/94s were a tan yellowish color. 1995 and up are different and won't work - electronics are different

If they have exactly the same amount of solenoids, you could switch the harnesses.... but it sounds like you have a 95 or newer trans which would have one more solenoid

I had the same problem. My backup lights wouldn't come on in when I put the auto. trans. shifter into the Reverse position. They WOULD come on briefly as I moved the shifter from Park position into Reverse, but would go off again when the shifter reached the Reverse detent. I got the solution from the Haynes service manual, in which the relevant switch is referred to as something like the neutral safety switch. Check on top of the steering column close to the firewall. Set the parking brake, then move the auto. trans. shifter into Neutral position. Get under the dash and rotate the neutral safety switch clockwise as far as it will go. Then move the shifter into the Park position, and your switch should be set. If the backup lights don't come on now when the shifter is put into Reverse position with the ignition switch 'on', there may be another problem.