ABS-Brakes light on Intermittently

glendonboy

New member
Jul 5, 2013
9
0
1
I have a 2005 GMC LLY with 181K miles. A few days ago the ABS-Brake light came on along with "Service Brakes" on the DIC. It will stay on one trip and off on another. I cannot tell any difference in braking. Fluid looks good. From other threads it sounds like it could be the ABS module, but did not see any reference to coming and going as far the lights and DIC message. Anyway to confirm it being the ABS module or any other suggestions much appreciated? Thxs!
 

KyleC4

Tech
Dec 30, 2016
410
20
18
Bay Area
Find a way to pull codes. Should see a C0265 I think is the common one I believe. And yes, on my truck it would come and go. Wouldn't come on everyday
 

Ron Nielson

Member
Oct 11, 2009
341
21
18
Berryton, KS
Check powers and grounds for the EBCM. The main ground is on the outside of the frame, near the driver's feet.
 

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glendonboy

New member
Jul 5, 2013
9
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1
These are the codes retrieved. Thx
1860df4f3831203b2a5b67a8411533ed.jpg


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down_hiller

Member
Oct 28, 2016
31
3
8
If you take the control module off the pump you can take it apart and resolder a few connections and that usually fixes it. There are lots of videos online that show which terminals. Ive done this to two trucks and had it work.
 

glendonboy

New member
Jul 5, 2013
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0
1
Update. Left me stranded. Ignition would turn at all. Steering wheel was not locked. Towed to dealer. No word yet.

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TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
13,976
282
83
Mid Michigan
My ABS light pops on once in a while. I need to get under the truck and clean that grounding point. Not bad for 18 years in Michigan.....
 

glendonboy

New member
Jul 5, 2013
9
0
1
Cylinder bad in the ignition. Will diagnose the abs logjt after repair. $980 so to repair and get a report on the light

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glendonboy

New member
Jul 5, 2013
9
0
1
Sorry about taking so long. l did not get my truck back till Friday of last week and my inlaws were visiting for the holiday. Dealer robbed me on the key cylinder replacement $$$$$$$$. Quoted me $1100 to replace the EBCM. I wire brushed the ground connections and added some dielectric grease.No ABS/Brake light or DIC service light. Thank you!!!!!!!!
 
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