No fuel Pressure on 2012 Suburban 2500 4x4
April 10th, 2018, 7:25 PM
#1
CF Beginner
Thread Starter
Join Date: Mar 2018
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
No fuel Pressure on 2012 Suburban 2500 4x4
I have been trying to figure out why I have no fuel. Fuel pump relay is ok, fuse is ok, when I try to crank the truck, I have power to the fuse. I have been seeing where people have had trouble with the fuel system control module, I have looked all over for this and can not track it down. I am at a loss.
Thanks in advance!
Thanks in advance!
April 12th, 2018, 7:45 PM
#3
CF Beginner
Thread Starter
Join Date: Mar 2018
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
I dropped the rear tank, it has the new style flat 4 pin connector. I checked for power between the green and black wire and did not get anything. I guess my question is now, are there any junctions/plugs underneath the vehicle that I can check, I have replaced the fuse block, thinking that the soldered on relay was the problem. I hate the thought of having to take this to the dealer. Thanks for the help.
April 13th, 2018, 7:10 PM
#5
CF Beginner
Thread Starter
Join Date: Mar 2018
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Well it is now running, and I feel like an idiot, as a last ditch effort, I decided to hit the lock button twice and see if it would start by the key fob, and it DID. I guess it has some kind of disable that I don't know about, not sure what caused it or what I hit to make it lock out the fuel. I have been driving it all over the place today with no problems. Thanks for the support though.
June 3rd, 2018, 3:18 PM
#6
CF Beginner
Thread Starter
Join Date: Mar 2018
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Well the truck has done it again!! Same situation, only light on is the check engine light. I messed with it,trying to get it to start, the service anti-theft FINALLY came on, I tried the reset procedure and the light went off. STILL will not start. I tried locking with key fob and starting remotely like last time, THIS did not work. I am lost. Any Ideas???
Trending Topics
Thanks for any help!
June 4th, 2018, 10:49 PM
#10
CF Beginner
Thread Starter
Join Date: Mar 2018
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
I used my Actron scan tool AND a Snap-On scan tool, both show that code. I am now thinking the ECM is the problem, its the only thing that controls the fuel pumps relay. I had the truck towed home on a roll back, once in the driveway, hit the key and voila, started like it should. I am going to get it up to temperature this weekend and then hit the ECM with a rubber mallet and see if it quits. Hopefully it does!