Question about 2000 Chevrolet Tahoe
My engine turns over but won't fire
I was driving the tahoe, shut it off , then it wouldn't restart. just turns over.
Is your security light flashing? If your Tahoe has the factory ant-theft system, if the security light is flashing while you are cranking your anti-theft system has been activated. It is common for the Tahoes to wear out the ignition lock assembly, lock cylinder and the ignition switch(electrical) which is attached to the lock assembly. I have replaced all three parts with great success and solved the no start problem on several GM trucks.
The most common problem with these vehicles is the fuel pump. The pump should run for a few seconds when you turn the key on before you crank the engine. If you don't hear the pump run, go to the fuse/relay box under the hood. Look at the diagram on the inside of the lid and locate the fuel pump fuse and relay. Check the fuse to see if it is blown put it back if OK or replace it. Unplug the fuel pump relay and use a paper clip to jumper across terminals #30 & #87 where the relay plugs in. If the fuel pump starts running, you should be able to hear it run at the back of the vehicle, where the tank is. If you don't hear the pump running, hit the center of the tank dead-center with a rubber or wooden mallet. If the pump still doesn't run, see if you can get to the wires going to the fuel pump and wiggle them. If you hear the pump run, try starting the engine. If it starts, replace the relay, if that was the problem or the fuel pump AND relay if the fuel pump was the problem. WARNING! WHEN YOU UNPLUG THE PAPER CLIP. IT MAY BE HOT!!!
The fuel pumps AND connector are big problems with GM trucks. If you replace the fuel pump(which is located in the fuel tank), use only the factory pump which you can buy at your GM dealer or an auto parts store that sells Delco parts. If the fuel pump used the small square four-pin electrical connector, replace it with the fuel pump. The latest GM/Delco fuel pumps will come with the new plug which you MUST change over as it is now a flat four-pin connector.
Posted on Jun 12, 2008
This has happened to my Father in Law Tahoe. After alot of test, Our mechanic said it was the Smog Pump. $275-315 depends on where you get the part at. vehicle starts up now.
Posted on Jan 05, 2015
I have a 2002 tahoe that wont start but it cranks over and acts like it wants to good fuel pump and filter and starter
Posted on May 10, 2014
replace fuel pump relay. check all fuses to ignition and pcm .make sure they are not loose. check coil wires make sure they not loose.look at battery if you have the ac delco seal battery make sure green eye still there .if its black have battery check out.
Posted on May 06, 2009
Have you done anything different to this car recently? Has anyone else
serviced it recently? If so, perhaps something was not connected right.
Sometimes when you have a key ring with a zillion keys weighing it down it could affect your ignition switch! Try a different key.
Maybe you need a tuneup if you haven't had one in years!
If you have an automatic it won't start until you put your foot on the brake - there is a switch on that brake that could be defective.
Bad fuel or fuel starvation could cause some stalling too!
I had a car once that developed a small hole in a rubber fuel line causing the car to **** air and stall. Check you fuel lines especially if they are rubber.
Posted on Jun 26, 2008
My suspicion is a starter going bad. Sometimes when starters get old and worn they will start good when the engine is cold but not when the engine is warmed up. Did you perhaps notice that lately is seemed to drag when you tried starting, especially warm or it seemed to crank a little slower? I'd replace the starter. Hope this helps.
Posted on Aug 14, 2011
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