signal light repair

[yukon45427]

i have a 1988 chevy stepside 4x4 im trying to restore everytime i turn the turn signal on it turns the 4 ways on anyone know what causes that?

i also need to know how the rear window comes out of this truck i dont see a rubber seal like the older ones had around the glass

thanks for any help you can give me if you want you can call me at 937-884-7285 or email ty

[MT-2500]

Originally Posted by yukon45427

i have a 1988 chevy stepside 4x4 im trying to restore everytime i turn the turn signal on it turns the 4 ways on anyone know what causes that?

i also need to know how the rear window comes out of this truck i dont see a rubber seal like the older ones had around the glass

thanks for any help you can give me if you want you can call me at 937-884-7285 or email ty

Make sure 4W switch is not stuck on or shorted.
If not.
You may need a new turn signal switch

[yukon45427]

where is the 4w switch located at and what does it look like. is it the round switch hanging out of the fuse box?

[Jeremy-WI]

4way switch= emergency flashers button

[MT-2500]

Originally Posted by yukon45427

where is the 4w switch located at and what does it look like. is it the round switch hanging out of the fuse box?

As said emg flasher.
Button should be on side of steering column.

[yukon45427]

i fixed the signal light problem it was just the typ of bulb that was in one of them and changed the flasher in the fusebox but now i have no parking light on front lol i think it might be a bad ground still working on it i also have a problem with the tranny wanting to kick down once its at a steady speed does this have a modular on it or anyplace to to adjust the passing gear?

[MT-2500]

Originally Posted by yukon45427

i fixed the signal light problem it was just the typ of bulb that was in one of them and changed the flasher in the fusebox but now i have no parking light on front lol i think it might be a bad ground still working on it i also have a problem with the tranny wanting to kick down once its at a steady speed does this have a modular on it or anyplace to to adjust the passing gear?

Well better fix the grounds.
Bad ground will do sll kinds of strange things.

Yes they have modjulator valves.

What transmission do you have?

[yukon45427]

Originally Posted by MT-2500

Well better fix the grounds.
Bad ground will do sll kinds of strange things.

Yes they have modjulator valves.

What transmission do you have?

i dont know what kind of tranny is in it but ive looked all aver that tranny for a modjulato valve and cant find one dont even see a vacum going to anything down there i also have a problem now with the spedo ita stuck on 20 and sometimes sticks on 30mph any thoughts?

[MT-2500]

Originally Posted by yukon45427

i dont know what kind of tranny is in it but ive looked all aver that tranny for a modjulato valve and cant find one dont even see a vacum going to anything down there i also have a problem now with the spedo ita stuck on 20 and sometimes sticks on 30mph any thoughts?

If OD trans it may be a 700-R4 which does not have a modulator valve.
But a tv cable that needs checked and may need adjusted.

A pan gasket ID will tell you what transmission you have.

[yukon45427]

ok ty

[Blue Bowtie]

Be very careful with any adjustments to the TV valve cable. The trans relies upon the TV inner and outer spool positions to modulate line pressure against the governor. Incorrect adjustment can cause under pressure and clutch damage or over pressure can cause harsh shifts, hard parts damage, and servo seal failures.

As for the rear cab window, it has been my experience that usually a piece of firewood or that last 2x4 on top of the pile is all that's necessary to take out the glass. I know the newer ones are bonded in with sealer, but I'm not sure about the '88.

[yukon45427]

ok ive got everything done to this truck except for the passing gear i push in on the side of the cable but it dont ack like its holding the cable where i put it it goes right back to where it was at am i doing something wrong or what?

[MT-2500]

Originally Posted by yukon45427

ok ive got everything done to this truck except for the passing gear i push in on the side of the cable but it dont ack like its holding the cable where i put it it goes right back to where it was at am i doing something wrong or what?

It is not a passing gear.
It is a the throttle valve pressure adjustment cable.
The tab you push in unlocks it.
You release the tab when you get it set where it should be.

First setting is full pull at wide open throttle.

Or set it at more than full pull and the lock it and mash peddle wide open and it should self adjust.
To first setting then fine tune it it correct shift pattern.