20 Most Recent 1993 Chevrolet K1500 - Page 7 Questions & Answers

it could be a blown bulb.

what size motor and is it automatic or standard?

Hello! The ALDL or On Board Diagnostic I (OBDI) connector is located under the dash on a 1993...And is different then the 94 you looked at...See diagram below...Is there a wire on "A" and "B"? "A" is a White/Black wire that changes to Black/White at the ALDL connector on pin "A"...and should read to ground..."B" is data and is Orange...These are the two wires that are shorted with a paper clip to get the trouble light to "blink" out a trouble code...I DO NOT see a connection between the fault that you have and the ALDL connector, Although the connector may be missing a wire (easily checked)...LETS SOLVE!!!The problem appears to be be a lack of a connection to the Yellow ignition wire which could appear White...It's the ACC ignition power to the radio...Just because the lights are on doesn't mean the radio itself has power from the ignition...Also The Orange ignition wire (hot at all times) maintains memory to the radio...The White? wire out out the back of the radio appears to be the ignition wire...If there is already a Yellow wire connected to the radio plug that has 12 volts on it when the key is turned to ACC let me know...Bottom line...Are there wires in both slots of the under dash ALDL connector??? And is there a splice into the Yellow ignition wire...SEND A COMMENT .saailer I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

wonder if its your neutral/safety switch ? just a thought, thinking outloud, automatic trans ? what about the (TV) cable, throttle valve cable, they need adjustment, controlsline pressure, its similiar to a vacuum modulator , maybe thats it, the modulator or its vacuum to it ! check all vacuum lines from intake manifold. hope this helps !

YES THERE IS A FUSE, BUT THERE IS ALSO A SWITCH MOUNTED ON THE TRNSMISSION, USUALLY THE WHERE GEAR SHIFTER HOOKS. HAS A SMALL LINKAGE ROD FROM SHIFTER LINKAGE TO SWITCH

Sounds like it might b the fuel is shuting down after pump gets warm also try this unplug your mass airflow sensor while its idiling it leave it unplug till your truck warms up if it dies them at least its not that sometimes iv run into this if it stays runnin then replace it they are high priced and you need to give part store your old one i had one that stopped my truck from running after in got warmed up also your fuel pump can be hot wire to fore it to run and if it stays going try looking at your relay fuel relay that is

inside the transmission under the pan

Those solenoids are inside the transmission case.

Theres lots of things that can cause this problem but try a couple of things like start the truck when its dark and see if you see any sparks any where because mayby a spark plug wire is off or worn through. Listen for a sucking sound because there could be a vacume leak. What I kinda think it is though is a clogged injector. If you could tell a difference when you changed the filter it could be that dirt got passed the filter and lodged in the injector...If it was me I would go ahead and replace the fuel pump. If I had to bet on it... I would bet its the fuel pump. If it ever set for a while theres a good chance the fuel turned bad and that trashes the pump. It could be a stopped up catalytic converter. Could have water in the gas. Also check the oil for signs of water ( foam or white residue) in case its got a blown head gasket or cracked head.
It might have jumped time. Let me know if nothing else i will tell you a quick way to check your timing chain.

there is a code table : code table hope it can help you and good luck

if you unplug the brake switch does the lights go out? if the lights go out then it sounds as though the switch is not adjusted properly.

is the trans fluid low or dirty(brown coloerd and has gunk in it?) take a white paper towel pull the stick out and look at the trans fluid on the towel..is there evidence of blackened stuff and aluminum shavings and stuff in it?..time for a fluid and filter change(this is always cheaper that total overhaul/replacement) good luck repost findings please..thnx

test the blower by running a jump wire directly to the power connector and see if the blower comes on..if not replace the blower..