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Username Post: Diagnostic port dead        (Topic#230814)
John 
Chevytalk Moderator & "3rd Year" Gold Supporting Member
Posts: 7196
John
Age: 45
Loc: Montgomery, AL
Reg: 01-15-02
12-01-09 06:18 PM - Post#1815982    

I have a check engine light on, 2005 Z71 Suburban. I had the code read twice at one of the zone's and they cleared it. Now it's been plugged into twice at different stores and they tell me the port is dead. Does it have a fuse?
1979 2wd K5 Blazer, 350/TH350
1985 4x4 M1009 K5 Blazer, 6.2/TH400


 
2plus2 
Member
Posts: 441
2plus2
Loc: Langley,BC
Reg: 02-03-05
12-01-09 07:11 PM - Post#1816052    
    In response to John

its the"cigar"fuse under the hood on mine,should be the same on the 03+
69 canadian pontiac 2+2
factory L48 350 chev,TH350,PW,PT
99 silverado rclb 4.8 nv4500 14bsf 4.10's locker 6" procomp 35 bfg m/t's 9k winch cutout flares
92 s10,bead locked 38 tsl's,d44,9inch,spools,sm 465/np208/np241,exo cage


 
BadAssDonzi 
Contributor
Posts: 213
BadAssDonzi
Loc: DFW
Reg: 07-27-08
12-02-09 07:45 PM - Post#1816768    
    In response to John

John, 2plus2 is correct. On most GM's, the OBD2 port is powered by the cig lighter fuse or sometimes called the courtesy fuse. The first thing I look for when I can't communicate with the vehicle is a blown fuse in the fuse box.

Hope this helps!!

If you think education is difficult, try being stupid.


1999 Chevy Suburban 1500 5.7L 2WD OBS


 
BBC-454 
Senior Member
Posts: 1400
BBC-454
Loc: Edmonton, Alberta
Reg: 05-11-03
12-02-09 08:19 PM - Post#1816790    
    In response to BadAssDonzi

I don't understand why they power it off that circuit. Probably the one fuse that pops the most of them all and they decide to run the power feed for the obd port. . . .
Josh R.L.
Licensed Automotive Mechanic
1966 Buick Special 2 door
1961 Chevrolet Apache 10 panel van
1995 GMC K2500
2011 VW Jetta TDI


 
John 
Chevytalk Moderator & "3rd Year" Gold Supporting Member
Posts: 7196
John
Age: 45
Loc: Montgomery, AL
Reg: 01-15-02
12-03-09 03:39 PM - Post#1817183    
    In response to BBC-454

Thanks guys.
1979 2wd K5 Blazer, 350/TH350
1985 4x4 M1009 K5 Blazer, 6.2/TH400


 
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