Braking

Tiny
RUMMERFIELDE
  • MEMBER
  • 2002 CHEVROLET TRAILBLAZER
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 197,000 MILES
My vehicle pulls left hard. We have replaced both front hub assemblies, front calipers, shocks, struts, left lower control arm, outer tie rod ends, sway bar links, brake pads and had aligned. Still does it. My ABS light does come on after I take out of park. Tired of replacing stuff with no relief. Any ideas? Thinking of replacing EBCM, but not sure if that would be cause and not cheap. Running out of money. Driving down highway it stays straight so I think alignment is still okay.
Wednesday, November 8th, 2017 AT 6:44 PM

7 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,573 POSTS
If it is pulling left during braking check to see if the right caliper is working. You could have a bad flex hose that is blocking fluid flow when you step on the pedal. Also, check the rear axle. Have you tried swapping the tires around as well? It is not real likely but a bad tire could be causing an issue under braking loads.

ABS light could be from a bad sensor or broken wire, you would need to get it scanned to see what code is setting.
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Wednesday, November 8th, 2017 AT 8:33 PM
Tiny
RUMMERFIELDE
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Only pulls when I brake. Once I let off of brakes it straightens out. We tried swapping tires. Replaced sway bar links on back and slide pin on right rear caliper because someone suggested that.
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Wednesday, November 8th, 2017 AT 8:37 PM
Tiny
STEVE W.
  • MECHANIC
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I would check the right front caliper to be sure it is working. I would get the ABS code scanned as well. It is possible an internal failure or a speed sensor is bad and it is trying to release the right brake when you stop.
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Wednesday, November 8th, 2017 AT 11:15 PM
Tiny
RUMMERFIELDE
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  • 3 POSTS
The right front caliper and hub assembly are all new. We wondered if it could be the EBCM? Going to see about getting the code read on it. I do not know what else it could be.
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Thursday, November 9th, 2017 AT 3:43 AM
Tiny
STEVE W.
  • MECHANIC
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But is the hose going to the caliper new? I have seen the hoses fail inside so that fluid could not flow enough to apply the brakes.
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Thursday, November 9th, 2017 AT 4:14 AM
Tiny
RUMMERFIELDE
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Yes. All new brake hoses on front.
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Thursday, November 9th, 2017 AT 5:18 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,573 POSTS
Okay, pull the codes and see what it shows. Does this have traction control? I think that was an option on them. Does it still pull with the TC off? How about if you pull the ABS fuses? With those out the ABS would be disabled and the base system takes over. If it still pulls it should not be caused by the brakes themselves.

Another way to isolate if it is braking controls or mechanical would be to flip the front brake outputs. Basically move the lines so the right front goes to left front and left front-right front. If you still have the left hand pull it would have to be mechanical in nature.
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Thursday, November 9th, 2017 AT 9:48 AM

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