Question about 1989 GMC Sierra

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GMC Sierra 1989 Will turn over but not start. Plenty of fuel. I need an online manual so I can work on this thing.

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Replace complete distribtor

Posted on Sep 04, 2010

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Posted on Jan 02, 2017

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1989 GMC sierra fuel pump and ignition stop working


Without testing we'd only be guessing ! Do you want to replace a bunch of parts till the problem is fixed ? Hooking up a scanner an looking at engine management system sensor's (data ) inputs to the engine computer would be the first place to start. If you don't have the ability to do this , suggest you take it to a qualified repair shop . Or learn automotive Engine system diagnostic's . A lot of thing's could cause the problem your having . Do you know how to test automotive electrical an electronic system's ?

Basic Ignition Description Operation and Testing any car

Electric Testing Techniques You Need to Know
ECM Inputs and Outputs Diagnosis


Dec 26, 2017 | 1989 GMC S-15 Jimmy

1 Answer

1989 GMC Sierra Truck Engine light is on? What could that mean?


The check engine light means something has happened to the performance of the engine to affect emissions. You need to get the computer scanned for trouble codes to proceed.
You can research "GM check engine light" online to get the steps to check it yourself.

Oct 08, 2012 | 1989 GMC Sierra

1 Answer

1989 GMC SIERRA - RUNS AND JUST QUITS RUNNING. I HAVE CHANGE THE DISTRIBUTOR CAP AND ROTARY BUTTON AND THE COIL ALONG WITH THE OTHER FIRING UNIT. I HAVE CHECK THE FUEL AND FUEL FILTER ALONG THE GAS LINE...


I had similar problems with my surburban run then com back out act like won't start replaced had to replace fuel pump haven't had anymore problems yet

Feb 08, 2012 | 1989 GMC Sierra

1 Answer

94 gmc sierra 4.3 v6 manual, won't turn over, can hear fuel pump start when accessories turned on..won't fire, girl who needs help


The first thing I would check is fuel pressure. This type of fuel injection requires a minimum fuel pressure in order to operate. If fuel pressure is as little as one psi below minimum the vehicle will not start. You can try squirting a couple of shots of carb spray into the air snorkel while somebody cranks the engine over. If the engine starts and then dies you now you fpdeffinetely have a fuel issue. If the engine still won't start check for spark. Let me know what you find. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Feb 07, 2012 | GMC Sierra Cars & Trucks

1 Answer

I have a 1989 GMC sierra 4.3 Liter, fuel pressure


u can do the check the other way around/ disconnect the fuel line that supply the injectors/ put the pipe in a small plastic container to see if fuel is being supplied by the pump and avoid fuel spill in ur engine/ crank the engine for at least 5 seconds see if the fuel squirts with pressure/ if it does then ur fuel pump is ok / blockage is somewhere down the fuel line/ u can check fuel lines by blowing it with air but u gonna need the help of an air compressor.....

Apr 09, 2010 | 1989 GMC Sierra

1 Answer

1989 GMC Sierra p/u gasoline V8 will not start. Cranks but no fuel from carb jets. Fuel pump is working. I put gas down the carb throats and it starts right up. The carb has two sensors over each jet,...


The Carb jets may be plugged try dry gas or so you fuel pump is working is the fuel filter plugged try checkin make sure you dont have any broken wires?

May 07, 2009 | 1998 GMC Sierra

2 Answers

1989 GMC sierra c1500 largest tire size?


any tire dealer can provide this info.

Apr 29, 2009 | 1989 GMC Sierra

1 Answer

1994 GMC Sierra wont start when at operating temp.starts fine cold!


its your fuel pressure regulator!!!!!!!
change that!!!!!!

Apr 13, 2009 | 1994 GMC Sierra

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