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Username Post: ECM-B Fuse blowing!!!!!!        (Topic#263112)
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
05-17-11 10:00 AM - Post#2091267    

I have a problem with the ECM-B fuse blowing. I have a 2001 suburban 2500 2 wheel drive, 6.0L engine. the first time this happened i was towing an explorer it blew about 20 miles into the trip, swapped the fuse to 30a made it home no problems. i replaced the 30a fuse back to a 20a worked for about 3-4 weeks. the second time it blew wife was driving up our driveway that is inclined. it blew a 20 a fuse as soon as i put it in, put a 25a fuse in blew when i cranked the engine, put a 30a in it was fine. i have checked the wiring for obvious signs of a short. thinking that the fuel pump might be on it way out. Any help would be a great help

 
Low priced Genuine GM Auto Parts
ratnfested 
Valued Contributor
Posts: 2924
ratnfested
Loc: Rochester, NY. USA
Reg: 03-13-00
05-17-11 10:23 AM - Post#2091279    
    In response to grunt99

I hear fuel pump or a bad connector on the tank can do that.
Philip Ferrera
1977 Chevelle
1977 Malibu Classic
1986 Grand Prix
1995 Tahoe
2003 Impala LS
2004 Ski Doo REV
Street Machines of Rochester NY


 
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
05-18-11 08:41 AM - Post#2091671    
    In response to ratnfested

i was hoping this would be ez. but that is my luck will pull the tank this weekend

 
ratnfested 
Valued Contributor
Posts: 2924
ratnfested
Loc: Rochester, NY. USA
Reg: 03-13-00
05-20-11 12:03 PM - Post#2092726    
    In response to grunt99

try disconnecting the harness above it and see if its burnt. then yeah I guess I might pull the tank if all looks on the wiring.
Philip Ferrera
1977 Chevelle
1977 Malibu Classic
1986 Grand Prix
1995 Tahoe
2003 Impala LS
2004 Ski Doo REV
Street Machines of Rochester NY


 
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
05-21-11 09:40 AM - Post#2093084    
    In response to ratnfested

i'm still hoping it is the connector but cab got to it with out lowering the tank

 
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
05-21-11 03:37 PM - Post#2093199    
    In response to grunt99

my last post should have been, i can't reach the connector with the tank on but i think i'll dig around one more time

 
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
05-22-11 08:27 AM - Post#2093452    
    In response to grunt99

does this thing have two tanks???, i see one above the spare tire, where the filler line goes in, but there is a large hose going from the tank above the spare tire to another much larger tank, of some kind on the drivers side, now I'm really cofused, all looks stock PLS help!!!!

 
ratnfested 
Valued Contributor
Posts: 2924
ratnfested
Loc: Rochester, NY. USA
Reg: 03-13-00
05-23-11 11:33 AM - Post#2093932    
    In response to grunt99

tank should be on the drivers side. Not sure what is above the spare tire.
Philip Ferrera
1977 Chevelle
1977 Malibu Classic
1986 Grand Prix
1995 Tahoe
2003 Impala LS
2004 Ski Doo REV
Street Machines of Rochester NY


 
shad2005 
Forum Newbie
Posts: 9
shad2005
Age: 46
Loc: Marion I.L.
Reg: 05-24-11
05-25-11 10:16 AM - Post#2094824    
    In response to ratnfested

Easier to slide or remove truck bed than to drop tank.
Brian L.Shadowens


 
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
05-31-11 10:25 AM - Post#2097449    
    In response to shad2005

sorry took so long to post back but with 4 kids not enough hours in the day. The suburban does have 2 tanks, the standard 29 or so gallon on on the drivers side and another tank above the spare tire. the fill line goes into the tank above the spare and gravity fills the larger tank. there are 2 fuel pumps also, primary running off the ECM fuse and secondary running off an ingition fuse. hopefully today i'll post the video following the fill line to both the tanks.

 
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
06-01-11 09:10 AM - Post#2097906    
    In response to grunt99

here is the you tube link to the video following the fuel lines from where you fill it up with gas thru both tanks

http://www.youtube.com/watch?v=bYxeJV0XtfE

 
grunt99 
Forum Newbie
Posts: 8

Reg: 05-17-11
06-06-11 06:31 AM - Post#2099892    
    In response to grunt99

well lowered the gas tank yesterday and the wiring looks brand new @ the fuel pump connector. so i'm ordering a new fuel pump

 
Low priced Genuine GM Auto Parts
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