Question about 1999 GMC Suburban
Sounds like a misfire when i am driving down the highway, and now it is seemingly cutting out. got code P1345, i have tested the crank sensor, fuel pressure. motor was replaced recently. PCM and body control module was replaced and reprogrammed by the dealer. sometimes it starts fine. others it will take me 10 minutes of tinkering to get it started (and i dont think its anything i did to make it start) could this just be off its timing, or should i look at replacement of the cam sensor/distributor?
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
Smell of the oil,to see if the fuel injector(spider)is leaking into the crank case,if so,the intake will have to be removed to repair the problem,oh,and change the oil.
Posted on Jul 11, 2010
SOURCE: 2000 GMC Jimmy, starts up
you say fuel pressure is good, but what is it? what is the fuel pressure when it stalls out? Spec is 60-66 psi and it wont run if its 55 psi. the fuel pump relay should be good if the pump runs. Make sure the ground for the pump is good , G402 should be on left frame rail. you may have had it off to replace the pump? maybe? it may be time to stop guessing and have a repair shop diagnose it for you. You sure have replaced a lot of good parts.
Posted on Sep 07, 2011
Tips for a great answer:
Sep 19, 2013 | 1999 Chevrolet Tahoe
May 24, 2017 | 1999 GMC Suburban
Apr 27, 2012 | Chevrolet Silverado 1500 Cars & Trucks
Mar 02, 2010 | 2000 Nissan Xterra
Oct 06, 2009 | 1999 GMC Suburban
Jul 11, 2009 | 2001 Hyundai Sonata
Mar 09, 2009 | 1999 GMC Jimmy
Jul 25, 2008 | 1999 Ford Windstar
35 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: