Question about 2002 GMC Sierra C/K1500

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2001 GMC Sierra intermittent starting problem

I'm having the same problem. It will crank over 8 - 10 times in a row, then won't. If I wait either 3 minutes, 10 minutes or 30 minutes then it'll start up just fine and it runs great. We've had it in and out of the shop - no one can find what's wrong. I'm tired of getting stranded!

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

SOURCE: 2005 GMC Denali

THIS COULD BE SEVERAL DIFFERENT PROBLEMS. SOUNDS AS IF IT MAY BE A FUEL DELIVERY CONCERN. THE ONLY WAY TO DIAG. THIS CONCERN WOULD BE USING AN UPDATED SCANNER FOR THIS VEHICLE. THE "SVC BRAKE SYSTEM" IS MOST LIKLEY CAUSED FROM THE NO START ENG CONCERN. IF I WERE TO TO TAKE AN EASY GUESS, YOU CAN CHECK YOUR FUEL PRESSURE REGULATOR, IT MAY BE LEAKING. TURN KEY TO RUN, DISCONNECT VACCUME HOSE @ REGULATOR. SEE IF FUEL IS COMING FROM REGULATOR, IF THERE IS, YOUR REGULATOR IS FAULTY. YOU MAY ALSO HAVE A DEFECTIVE FUEL PUMP, BUT A GUAGE IS NEEDED TO VERIFY.

Posted on Nov 08, 2008

  • 1 Answer

SOURCE: Our 2004 GMC canyon will not start from time to time.

sell the truck and get one that does not have the security system that locks out the engine starting. I wish I could but I can't for a year or so.

Posted on Feb 09, 2009

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SOURCE: 2008 GMC 2500 Sierra - Change factory tire pressure setting

Let me understand this.. I ask you guy's a question and before you send me the answer, you want to charge me. Then you ask if I resolved the problem and if so, tell you how I did it. Well I did resolve it and I would be more than happy to tell you how. $29.95 with get my detailed response.

Posted on Feb 16, 2009

emissionwiz
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SOURCE: 1989 GMC sierra c1500 largest tire size?

any tire dealer can provide this info.

Posted on Jun 10, 2009

Molson02536
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SOURCE: Intermitten A?C Problem on my 2001 GMC Silverado

There should be a few things that has gone bad but were going to go with the low on R143a for now. Do not get a recharge kit like everyone uses, Call around and get quotes to getting your a/c recharged, on thing they will use a gauge on the high and low side which would indicate a problem with the a/c system to low on R143a to a bad orifice tube or a a/c compressor going bad. The low and high side should read 80 to 105psi with the clutch not engaged. when the clutch is engaged the low side should be 25 to 35psi and the high side should be 200 to 350psi any thing different would give you a poor a/c system Good luck ad keep me posted.

Posted on Jun 29, 2009

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1 Answer

1998 GMC K1500 Sierra SL 4wd Truck will crank but not start I cant get any fuel


The first thing i would check is the fuel pressure. the fuel pump may be running, but that doesn't mean that it is putting out the right amount of fuel

Jul 30, 2013 | Cars & Trucks

1 Answer

Fuel pump


Testing of the fuel and ignition systems is in order. Intermittent problems need testing when the problem is present, otherwise it won't help find the problem.
I would start by checking for spark on a spark plug wire (or two or three plug wires, in case it may be a bad coil), during those times when it won't start. You need to see a blue, snapping spark to verify ignition system is working.
To check the fuel system, have the fuel pressure checked, and the injector circuit checked. Good that you hear the pump, but you don't know if fuel pressure is correct, or if fuel is getting into the cylinders. One short test is to spray starting fluid or carb cleaner into the intake while engine is cranking. If engine fires up for a few seconds, you know it is a gas related problem.
If ignition system is the intermittent problem, could be failing coil or coils, ignition module, crank position sensor, even the computer, or a wiring problem like a bad connection. Testing of each component will be required, or you could start throwing new parts at it, like many people do, until you find the bad part. Find a reputable mechanic-there still are a few, lol.

Jul 30, 2013 | 1998 GMC Sierra

1 Answer

My 2007 gmc sierra quit and has no fuel pressure


A lot of GM vehicles will start for a few seconds then turn off, it's due to the VAT System. Vehicle Anti-theft System. The most common procedure to relearn the key to the BMC is to: 1.Put key in turn to the ON position, security light should come on and stay on, wait 10 minutes, light should go out.
2. Turn Key off, wait five seconds.
3. Repeat steps 1 and 2; 3 times, it will take you 30 minutes to do this, but I've have multiple vehicles that this solved the problem. It's most common when changing wiring harnesses, BCM's, and steering columns.
4. After the third cycle of turning the key on and off for the appropriate amount of time, you should be able to crank it over and it will stay running.

Keep in mind, this is if you're fighting a computer problem,not general maintenance. Hope this helps!

May 11, 2012 | 2007 GMC Sierra 1500

1 Answer

1995 GMC Sierra, 4.3 V6. Won't start after trying to ****** timing. How do I get it back to correct position?


The simplest way would be to look for the shiny or clean spot on the distrubutor base that was under the keeper, and put it there.

Feb 01, 2012 | 1995 GMC Sierra

1 Answer

I have a 1999 gmc sierra with (as of 30 days ago cat. converter, fuel pump and filter, cap and rotor) changed in garage. regular oil changes, tune ups as of 8 mths. it has lots of cranking power, but...


If i understand you right the truck has been sitting for two years.If it has been sitting that long without running or moving the gas has turned to varnish...I suggest that you drain and refill the fuel tank,and replace the fuel filter located on/in the frame rail on drivers side.

Jun 18, 2011 | 1999 GMC Sierra

1 Answer

2001 gmc sierra, light under the hood is out. where is the fuse for it


In the fuse box under the hood Its the one marked TBC second across from CTBY LP Bottom row its the last one. That where it is on our truck but its a 2000 GMC you could try it.

Dec 16, 2010 | 2001 GMC Sierra 1500HD

2 Answers

2005 GMC Sierra 2500HD 6.0 Won't turn over


I have seen many ign switchs. Check to see if the theft doesn't flash when you try to start. It is still posable that the starter is going. Have someone crank the engine. Check for power on the purple wire. If there is power and the it does not crank. Check that the big wire has a soild 12 volts. You can use a screw driver and jump the purple and the big 12v battery at the starter and it should turn on if not replace the starter

Dec 02, 2009 | 2005 GMC Sierra 2500HD 4WD

3 Answers

2002 gmc sierra wont start without useing jumper


Yes it has a rubber cover over it in the engine compartment.i would change the relay.good luck.

Aug 01, 2009 | 2002 GMC Sierra

1 Answer

2001 GMC Sierra 2500 4WD Starting problems


Now is the time to diagnose it, no one can diagnose a no start problem on a vehicle that runs, Now someone can easily put an OBDII scan tool on it and in about 5 min know what is keeping it from running, Now Im not talking about a $20 code reader Im talkin about a professional OBDII bidirectional scan tool with a scan tool a qualified tech can watch the crank sensor and cam sensor he can monitor fuel pressure with a fuel pressure guage he can fix it much cheaper than anyone can by just changing parts from a friends previous experiences. Sorry this is the easiest least expensive way

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