Question about 2003 GMC Sonoma Extended Cab
Will not start and the battery and alternernor are fine
Do you know if you fuel. is there a buzzing from the gas tank when the key is turned. do you have spark to the coils. and also check the crank position sensor
Posted on Nov 06, 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
Has the fuel regulator been checked or replaced.
I'm not sure which engine you have, but to check the regulator, if it applies to your engine, is to connect a fuel pressure gauge and monitor pressure after the engine is shut off. The fuel pressure should not leak down, if it does, you may have a weak regulator or leaking injector.
If the regulator checks out, you may want to consider a fuel injector rail cleaning. I don't know how many miles you have on the truck, but if you are over 60K and the system has never been cleaned, the injector or injectors can deliver a malformed spray pattern that is not atomized correctly and cause hard starts, hesitation and lower fuel economy.
Good luck, let me know.
Posted on Mar 30, 2009
Wheel speed sensors misadjusted, damaged , or metal shavings and other debree, since they are magnetic can give false readings from one of the wheel circuits. Over sized tires can give of false speed readings as well. there are many other causes including bad relay, control module, e.t.c. It is best to have the proper scan tool to diagnose an ABS problem
Posted on Jul 09, 2009
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.
Posted on Mar 21, 2010
Tips for a great answer:
Feb 04, 2016 | 1997 GMC Sierra
Feb 29, 2012 | 2001 GMC Sierra C/K3500
Jan 19, 2012 | 1992 GMC Sierra
Dec 16, 2011 | 1989 GMC Sierra
Sep 26, 2010 | 2002 GMC Sierra 1500
Jun 15, 2010 | 2001 GMC Sierra 2500HD
Apr 22, 2010 | 2001 GMC Sierra Crew Cab
Oct 10, 2009 | 2001 GMC Sierra 1500HD
Mar 15, 2009 | 2001 GMC Sierra 2500HD
212 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: