2001 Chevrolet Silverado 1500 Questions

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I've replaced the distributor rotor and cap new fuel filter gets spark gets gas still will not start it turns over but will not start I've checked the spark and it's yellow but I know it's not the rotor button or cap because both are brand new any help would be greatly appreciated its a 4.3
I replaced the ignition module and the crankshaft sensor and the ignition coil. I get no spark in the ignition coil what can the problem be ?? On the gas pump relay i connect two legs on the relay and gus pump turns on but not when i turn the key on start position .could the computer be the problem?? The truck cranks good.Please help
I just purchased this 01 gmc sierra 1500 and do not know the correct procedure for engaging the 4 wd ranges with the pushbutton setup. Do you stop,put it in neutral then select the range? I am going to put it up on jackstands and check it out but would like some info as regards the pushbutton setup. I have three older 2500's w/ floor shift levers.
I have a 2001 one Chevy Silverado I have replaced the transfer case and the shift selector box. All the light on the box are on and will not shift. I have checked all connections and all fuses and grounds. Thanks for the help
Have A 2001 Chev Silverado 2500 6l v8 will not start if it's below min 15 just turns over and over won't fire .fires fine in warm weather so it's got spark and fuel what else could my problem be??
I was told I need to do a case relearn
no service 4 wheel drive light.... suggestions ???
Every now and then it will roll up and down passengers. I changed switches and it worked maybe a day then quit again. The 1st switch was burned( melted ) on back side when I took it out.
Runs sluggish when starting at first but if I stop and go in reverse it runs fine. Yesterday on the interstate I had to floor it to get it going to 50mph. First time it did that in all gears. Seems to worse when it's warmed up or hot.
when turned off fuel drains back to tank. to start must leave key on for a whole to get fuel to engine.
How long have you had this problem? every time it sets for over an hour or so.
Have bled all lines, new master cyl, rotors, calipers, rubber lines.
What seems to make the problem better or worse? all te time
How long have you had this problem? since master cyl caused brakes to burn out.
It doesn't do it all the time but when it does it is really hard to push, no brakes and the it will go back to working normal again for a day or so.
The passock ll anti theft system
The seat belt is integral to the seat.
I want to say it want to start but not. Battery good, fuel pump and filter. What could be the problem
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