Question about 1999 GMC Yukon
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?
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
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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
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,
Posted on Oct 21, 2008
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
Tips for a great answer:
Sep 21, 2017 | Pontiac Cars & Trucks
Feb 28, 2016 | Cars & Trucks
Jan 22, 2016 | Cars & Trucks
May 13, 2017 | 2007 Chevrolet Tahoe
Aug 18, 2017 | 1996 Chevrolet K1500
Dec 13, 2011 | 1987 Chevrolet Camaro
Aug 03, 2009 | 2000 Mitsubishi Eclipse
Jan 22, 2009 | Mazda B3000 Cars & Trucks
Dec 11, 2016 | 1999 GMC Yukon
134 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: