Question about 2000 GMC Sierra 3500

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Diesel truck wont stay running in the cold weather

Truck starts up but then dies out, restarts and keeps dying.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

emissionwiz
  • 75005 Answers

SOURCE: truck starts but won't stay running

You may have a problem with the contacts in the ignition switch (not key part), when you crank the engine a signal is sent to the fuel pump to run, when it starts and you let off the key another set of contacts keeps the pump getting power Through a relay), these are known as crank and run modes.

Posted on Aug 04, 2008

  • 328 Answers

SOURCE: Truck wont start

Is it getting fuel?
is it getting spark?


as for the code.........here is the code list for gm vehicles



Code: Meaning:
12
No Distributor pulses
13
Oxygen sensor
14
Coolant Temp sensor circuit
15
Coolant Temp sensor circuit
21
Throttle Position Sensor
22
Throttle Position Sensor
23
Manifold Air temperature sensor
24
VSS (Vehicle Speed sensor)
25
Manifold Air temperature sensor
32
EGR system
33
MAP sensor or MAF sensor depending on engine
34
MAP sensor or MAF sensor depending on engine
35
Idle Air Control Valve
36
MAF Burn-off circuit
41
No Distributor pulses, cylinder select error
42
Electronic Spark Timing or Bypass fault
43
Electronic Spark Control fault
44
Lean exhaust
45
Rich exhaust
46
VATS system fault
51
PROM fault
52
CALPAK fault
53
System over-voltage
54
Fuel pump circuit
55
ECM fault
61
Oxygen sensor fault (degraded sensor)




Posted on Dec 14, 2008

Papa Chan
  • 56 Answers

SOURCE: 2003 GMC Duramax Diesel won't start

I see that you had the injectors replaced 20,000 miles ago. I would still check the oil to make sure it is not overfull. The new injectors could be bad. If the oil level is not overfull then get a paper towel and touch the dip stick tip on the paper towel while oil is on the dip stick. If it's only oil it will not spread. If it has diesel in the oil the oil with spread. If this test doesn't show the injectors to be bad then you have three other possibilities. The FICM (fuel injection control module), the fuel pressure regulator, or the injection pump. It's hard to pinpoint what the problem is without running more tests and the only way to run those tests is with the computer the dealership has. Just so you know your injectors are still under warranty until 100,000 miles. Most likely you will have to take it to the dealership to get you truck fixed. I hope this helps you some.

Posted on Jan 05, 2009

  • 1 Answer

SOURCE: 99 suburban wont start sometimes

I had a similar ongoing problem with my 1999 GMC Suburban C1500, it occurred only in the hottest days of the Texas summer. In addition to not starting, the truck sometimes exhibited symptoms of misfiring while driving at highway speeds, as if the engine seized or as if there no fuel being delivered to fire.
I found a small garage mechanic who swore he could fix it after years of taking it to the dealer and other franchise repair shops and getting the same answer "we can't find anything it like you described, it won't do it while we're testing it, bring it in right away so we can get the history codes....blah, blah, blah". I always thought it was due to an intermittent electrical grounding issue. Anyway, long story short, the small garage mechanic was guessing a lot of the time, but after changing the fuel pump, the sending unit, fuel injection system and many return trips to the garage with me saying 'that wasn't it, it's still doing it" it finally turned out to be a faulty wiring connector link in the harness assembly ABOVE the FUEL TANK that came from the pump or sending unit. When it got hot the link would melt and create a short, when it cooled a bit it would still conduct. We replaced the wiring connector and 4 years worth of unexplainable intermittent starting problems disappeared. I spent $2K to $3K over the years, when it finally turned out to be a hidden $12 wiring connector.

Good Luck.

Posted on Jan 18, 2009

  • 90 Answers

SOURCE: hard start when air temp is cold, backfires when warm

Try this, remove (MAF) Mas Air Flow sensor,(be sure key is OFF) so you don't set a trouble code when disconecting wire conector, with some throttle body/air intake cleaner from the outlet side of MAF, spray the sensor clean, let dry, reassemble.Remove snorkle from throttle body, and with a old tooth brush, clean throttle body& plate with cleaner, may take a couple of cans if throttle is badly 'coked' up. Hope this helps.

Posted on Feb 01, 2009

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if I'm reading this right...
... the engine starts and dies within a few seconds.
... you jumpered the fuel pump test connector and it will keep running.
... you smell fuel after trying to re-start when it dies.

Disconnect the plug to the cold start injector. Even if you have an issue with the engine running then dying after a few seconds after doing this, if you don't smell fuel after disconnecting the cold start injector and try to restart it, the cold start time injector time switch may be failing.

Buy a can of starting fluid and have someone start the engine then spray short bursts of the fluid around all the intake fittings. If spraying the fluid in any particular area keeps the engine running, I'd start looking for leaks around that area.


It does sound like an AFM or COR issue considering it dies after a few seconds, but the fuel smell when trying to restart the engine may be a separate issue that needs corrected / isolated first.it will keep running.

... you smell fuel after trying to re-start when it dies.


Disconnect the plug to the cold start injector. Even if you have an issue with the engine running then dying after a few seconds after doing this, if you don't smell fuel after disconnecting the cold start injector and try to restart it, the cold start time injector time switch may be failing.


Buy a can of starting fluid and have someone start the engine then spray short bursts of the fluid around all the intake fittings. If spraying the fluid in any particular area keeps the engine running, I'd start looking for leaks around that area.


It does sound like an AFM or COR issue considering it dies after a few seconds, but the fuel smell when trying to restart the engine may be a separate issue that needs corrected / isolated first.

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