So when I am coming to a stop and am almost completely stopped the brake depresses more and my truck moves forward about a foot. I was told this was early abs activation and was due to dirty sensors or bad sensor which need to be replaced. My brother in law who is a mechanic thinks it has to do with a valve in the master cylinder. The abs light is not on, the fuse is good, the brakes feel fine right up until the little surge happens, haven't been able to pull the rotor or hub off yet (don't have tools and seized on pretty good), don't know what to think. Anyone have this problem before or know what to do? Thanks.
fill out your signature: is it lifted, bigger tires than stock?
__________________ 2005 LT 3500HD CCLB SRW LLY EFI LIVE TUNED BY IDAHOROB TCM TUNED BY MMLMM
Lbz intake and mouthpiece
Torsion lift keys
MBRP 4" turbo back
Autometer boost and egt, res mod, Ride rite bags
Mcculloch 5300k HIDS
Hauls a 13k toyhauler to the dunes
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My last truck would do that as well, i put it on a lift to check everything over and found one of my steer tires wheel bearing was worn out bad. i would check the sensors, bearings, etc. Driving down the road you couldnt tell, only right before i would come to a complete stop, same symptoms as yours, just another option to check
__________________ Derek Wessels 2005 Chevrolet 2500HD crewcab LLY, LT3 package
Banks 4" Monster Exhaust, S&B cold air intake, Kodiak mouthpiece and MBRP cat delete pipe
B&W turnover fifthwheel, Pac-brake air springs
BF Goodrich All-Terrains 285/75/R16 on stock rims
Mods to come:congnito tie rods, and PPE Excellerater Standard
I had a 1998 gmc k1500 and it did the same thing. My gmc mechanic friend said that the sensor that bolts to the Hub gets corrored and moves the sensor out of position. Just remove sensor, clean up, lube a little with light axle grease and reinstall.
That fixed it and never had a problem again. Ex-wife has that truck, but I got the Duramax
its porb a WSS or a hub going out.... or you need to flush and replace the fuild in your hydro-boost system.
__________________ Vehicle 2008 Chevy Crew Cab Short Bed Tires & Wheels 285/75/R16 Load Range E BFG A/T's on Stock Rims Suspension Cognito UCA kit with Bilsteins all around from Nick at Nor-Cal Truck Drivetrain LMM Duramax, Allsion 1000 Transmssion Performance Mods RBP downpipe back exhaust (no CAT or DPF), TransGo Jr, Mag Hytec transmssion and rear end covers, PPE Hot+2 Race LMM tuner (160hp setting), PPE Air Box Mod, Resonator Blocked, Auto Meter GS Boost, EGT, and Transmission gauges, Auto Meter triple pillar with speaker cutout. all from Tyler at Meyer Performance & Fabrication, LLC Other Mods B&W Turn Over Ball, Air Lift Bags, Wether Tech FloorLiners, SpeedLiner spray in bedliner, debadged whole truck except bow ties and D-Max/Allsion logo
Did the abs light come on duramax rob? Mine isn't, kinda weird if there is a prob with the sensor that the light doesn't come on. Thanks though. Buck, does flushing the system just clean it up, would old fluid cause this problem? Thanks again.
When the pedal dose that sometimes its the hydro-boost. that little bit of extra travel sometimes in turn activates the abs. any truck with over 40,000mi should have it done anway. esp if you tow with it.
__________________ Vehicle 2008 Chevy Crew Cab Short Bed Tires & Wheels 285/75/R16 Load Range E BFG A/T's on Stock Rims Suspension Cognito UCA kit with Bilsteins all around from Nick at Nor-Cal Truck Drivetrain LMM Duramax, Allsion 1000 Transmssion Performance Mods RBP downpipe back exhaust (no CAT or DPF), TransGo Jr, Mag Hytec transmssion and rear end covers, PPE Hot+2 Race LMM tuner (160hp setting), PPE Air Box Mod, Resonator Blocked, Auto Meter GS Boost, EGT, and Transmission gauges, Auto Meter triple pillar with speaker cutout. all from Tyler at Meyer Performance & Fabrication, LLC Other Mods B&W Turn Over Ball, Air Lift Bags, Wether Tech FloorLiners, SpeedLiner spray in bedliner, debadged whole truck except bow ties and D-Max/Allsion logo
Did ya get it figured out yet Apoleian? Mine does the exact same thing, I cleaned the sensors and that didnt help...Ive heard everything from warped rotors to bad REAR brakes??? To hubs/bearings and sensors...Im leaning toward replacing the hubs but havnt got around to it yet.
__________________ 2004.5 LLY Extended cab 4x4 2500HD
4" Turbo Back Exhaust
PPE Standard
KB Modded mouthpiece
Hook'em modded air box
Haven't got it fixed yet. I called GM about it and it seems there may be an open service notice or something like that. It's not a recall, but they have opened an investigation of sorts, they'll call me when they figured out if they're going to do anything about it. You guys may want to do the same.
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and MBRP cat delete pipe
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