20 Most Recent 1989 GMC K1500 - Page 9 Questions & Answers

Here how it looks like

HI there i see you replaced distributor cap .
on distributor cap is two small screws on some caps
the screws are too long and the has a gap and moister
can effect the distributor. if so tack out and reuse old ones
or tack back to store where you got them ok

12 HOLES

a 700R4 is the same as a 4L60. if you have a large round plug on the passenger side of trans , thats a 4l60e and will not interchange (it's computer controlled)

Hello first

Well in my years i have dealt with alot of no start issues but your sounds like a faulty crankshaft position sensor. that senors controls when to fire spark and to what cylinder to fire spark to.

Also the camshaft position sensor does the same thing they work hand in hand i would start with
the crank sensor first as its normally cheaper.

I hope this helps you if so can you please leave 4 thumbs up it helps me continue to help you all

Your truck does not have a c3 transmission in it. That is an old Ford transmission. Yours should have a 4L60 transmission in it. I would say that your tranny is toast. You could pull the pan off and you will probably find parts and pieces.

4X4 ALWAYS GIVE A LITTLE MORE ROOM TO WORK DRAIN THE OIL TAKE OUT ALL THE BOLTS YOU ARE GOING TO HAVE TO PRY THE PAN DOWN IF YOU NEED MORE ROOM JACK THE TRUCK A LITTLE WILE YOU HAVE THE PAN DOWN MAKE SURE TO SCRAPE THE ENGINE BLOCK AND PAN ALSO CLEAN THE PAN VERY WELL AND PAINT ORANGE THATS GM COLOR WHEN YOU ARE READY TO PUT THE PAN BACK IN USE PERMATEX (BLACK) IT WORKS VERY WELL AROUND OIL THE REASON FOR PAINTING IS TO CHECK FOR ANY LEAKS JUST TIGHTEN THE BOLTS DOWN TIGHT I HOPE THIS HELPS GOOD LUCK BOB

First check for spark at the sparkplug if you have fire check fuel pressure make sure its within the specs, this should narrow it down for you.

the pcm is the computer.its located under the dash on the passenger side.you don`t say what if this is a car or truck.same thing applies but some are behind the glove box,which will have to be removed to see the pcm.you can get a book from the library or buy one so you will know how and what wires you need to check.