Question about 2000 GMC New Sierra 1500

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I have a 99 gmc sierra with 5.3 it takes about 7 seconds to start

I have a 99 gmc sierra with 5.3 it takes about 7 seconds starter turning for engine to start. When it idles it runs very rough like miss fire
and exhaust smells like unburnt fuel or possible rich mixture? I also
noticed fuel runs out vacumn line when unhooked from fuel pressure regulator. Fuel pressure is running 50 PSI.

Posted by on

  • tmorrison55 Sep 05, 2009

    I have found the fix and it was the fuel pressure regulator. It now runs great once again!

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  • 10 Answers

Needs a valve adjustment. I assume its EFI, eliminating the possibility of the carb.

Posted on Sep 04, 2009

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Posted on Jan 02, 2017

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My 99 GMC SIERRA will not fire after replacing the transmission


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What is the sparkplug firing order for GMC Sierra pickup truck with a 5.7 liter engine


1-8-4-3-6-5-7-2

Driver side cylinders, starting at the front of the engine, are 1,3,5,7

Passenger side, starting at the front, are ,2,4,6,8

Hope this helps.

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1997 gmc sierra 3500 won't start


When you turn the ignition to start, do you hear the starter turning and the solenoid engaging the flywheel ? test your starter by jumping it and see if the engine turns over. If this works, then you might consider in checking fuel pressure. Do you have any codes in your ECM ?

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How to remove "oil change" code on 04 gmc sierra


Turn the key on,and press the gas pedal three times slow,within five seconds

Jun 08, 2010 | 2004 GMC Sierra

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GMC Sierra Won't Start. Battery Good. Tried Jump


If you know the batter is good.

Check the Starter to see it is getting power.

Get a test light [6.00] and see if the starter will light up the test light.
If not - then you may need a new starter. From the sounds of it you might want to take it to a professional as this can be a very labor intense job because the starter has to come out the bottom.

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1 Answer

I changed batteries in my 2003 GMC Sierra key fob


1. Close all doors
2. Insert key into ignition
3. Hold down the power UNLOCK button on the driver's door panel, continue to hold down
until instructed to release in step 9.

4. Perform steps 5 through 8 in a fairly rapid succession.
5. Turn the ignition to the ON position (as far as you can go without starting the engine.)
6. Turn the ignition to the OFF position.
7. Turn the ignition to the ON position (as far as you can go without starting the engine.)
8. Turn the ignition to the OFF position.
9. Release the power UNLOCK button on the door panel. The vehicle should respond by
door locks locking and unlocking automatically. (If locks do not cycle after you let go,
not before you let go of the unlock button, then the vehicle has not entered programming
mode and you must start procedure over. Remove key from ignition, open drivers door
and return to step 1 ). If the locks do cycle automatically then proceed to step 10.

10. Hold down the LOCK and UNLOCK buttons on the remote until the doors lock and
unlock. This may take up to 30 seconds.

11. Repeat step 10 NOW for each additional remote. (Including any existing remotes).
12. Turn the ignition to the ON position to exit the programming mode.
13. Test remote(s).

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2 Answers

2006 GMC Sierra when you go to start it does alot of clicking before it eventually starts


Hi DL,

Two possibilities:
  1. Weak Battery
  2. Solenoid on its last legs
Just the fact that it eventually starts points me toward the solenoid (and not the starter).

Question on the "clicking": When you turn the key, do you get one solid click or a series of rapid fire clicks?

One solid click is the solenoid. It's not transferring power to the starter. These are a LOT cheaper to replace than the starter or battery.

Rapid fire is a weak battery. You can confirm this by getting a 'Load Test' at an Auto Parts or Battery store. This simulates the load of an engine starting on your battery. It takes 5 seconds, the results are Pass or Fail.

My moneys on the solenoid

Best of luck sir

Mike

Oct 02, 2009 | 2006 GMC Sierra

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99 gmc oil light flashing


Try reseting it again. Sometimes it takes a couple of tries to get it right.

May 21, 2008 | 2000 GMC New Sierra 1500

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