Question about 1999 GMC Yukon

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Truck starts and drives for a while then quits. After waiting a time it will start again

So it starts and runs 4 a while then it quits and wont start after cranking for a while. So i wait and then it does start and drives for a lil while and quits again..il wait and the process repeats itself. Noticed also that i have to press harder on gas pedal to get the power i once got. Any ideas?

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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

Posted on Oct 27, 2012

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 97 GMC Sonoma

checked fuses , #9 fuse for fuel pump was loose.

Posted on Jun 22, 2008

  • 130 Answers

SOURCE: I have a 1998 GMC

resistance in plug wires ... degrades them. I find this as a standard GMC Sierra problem. Two sets on mine already. Coding is for misfires. Also, possible to unplug your MAS [mass air sensor] which will keep the 'check engine' light on at all times but it will no longer be in the circuit and could also be another solution to the problem. Changing out O2 sensors is just expensive since there are Banks A and B and each bank has 2 sensors. The cost from a part store is 80$+... hate to know what they charge you at a garage.

Go with the new wire set first.

Posted on Oct 15, 2008

  • 1 Answer

SOURCE: Same thing here...

thanks for your help I will continue checking this since I have like 2 month with this problem, I will let you know what happends probabliy I will need to take my truck to a dealer,

Regards.

Posted on Oct 21, 2008

  • 5 Answers

SOURCE: Engine sputtering now it wont start

sounds like the same problem i was just having try changing out your fuel regulator its pretty pricey try to find the cheapest around $75.

Posted on Apr 07, 2009

  • 1 Answer

SOURCE: 2002 GMC 2500HD 8.1L

Sounds like the cam positioning sensor. I have a 2002 GMC 2500HD 8.1L and this happened to me. Hope this helps.

Posted on Apr 20, 2009

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