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Chevrolet Blazer Brake Problems

75 messages,  Last post on Sep 07, 2009 at 6:45 AM

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What is this discussion about? GMC, GMC Jimmy, Brakes, SUV

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#6 of 75 Re: Intermittent Brake Problem [crpntrlady] by repairdog Jun 27, 2006 (2:59 am)
Replying to: crpntrlady (Jun 27, 2006 1:48 am) Did a search on your year and abs and here's a possible reason from the "Center for Safety". Call the dealer and run your VIN and it may be free to fix -report back here when resolved.   "Prompted by over 7,000 consumer complaints, NHTSA opened an investigation into ABS brakes in June 1994 on all 1991-94 S/T pickups and utility vehicles. Many drivers reported the brake pedal suddenly "went to the floor" without warning. The ABS brakes in the smaller 1991-96 Blazer, Jimmy, Bravada and S/T-series pickups and Sonomas randomly failed to stop the vehicle with consumers reporting more than 2,000 accidents and 600 injuries. In August 1999 NHTSA announced a recall of over one million 1991-96 S10, Blazer, Sonoma, Jimmy with 4-wheel drive & EBC4 ABS to replace a safety switch that caused the vehicles to go into 2-wheel drive and increased stopping distance. In addition, 1993-96 models with 3-sensor (versus 4-sensor) EBC4 ABS were to get improved computer software for the braking system." Replies to this message: crpntrlady (Jun 27, 2006 12:20 pm) repairdog (Jun 28, 2006 2:39 am)
#7 of 75 Re: Intermittent Brake Problem [repairdog] by crpntrlady Jun 27, 2006 (12:20 pm)
Replying to: repairdog (Jun 27, 2006 2:59 am) Thank you repairdog, just called the local dealership and there are no outstanding recalls for the brakes on my vehicle. Replies to this message: repairdog (Jun 28, 2006 2:39 am)
#8 of 75 Re: Intermittent Brake Problem [crpntrlady] by repairdog Jun 28, 2006 (2:39 am)
Replying to: crpntrlady (Jun 27, 2006 12:20 pm) I would try them again with the data above and state your issue because the time limit and mileage are too high for them to cover a 94 - I was dreaming they might actually have someone that had been there awhile or cared - seems like you have to ask several times to get anything done. Ask for the service manager and if he can't help ask for the zone rep to review this (thats the area problem resolution guy) but the vehicle will have to go in to a dealer before the rep can step in.
#9 of 75 jimmy brakes by stumped6 Jun 29, 2006 (7:29 pm)
My 1999 Jimmy just started showing signs of a similar problem posted earlier. If you press on the brake pedal while the engine is off, the pedal moves about 3/4" before backpressure is felt. When the engine is running, the pedal feels very spongy, even when driving. After a short drive, the brake appears to start working, and you feel the braking effect on the first push, as when approaching a stop light. On subsequent pushes, the brake pedal feels much softer, and you really have to push on the pedal to stop. I have always done my own repairs for the last 30 years, but have never come across a problem like this. The brake pads are good, and there is no air in the system. Could it be the ABS?? Any thoughts? Replies to this message: repairdog (Jun 30, 2006 3:03 am) stumped6 (Jul 01, 2006 4:11 pm)
#10 of 75 Re: jimmy brakes [stumped6] by repairdog Jun 30, 2006 (3:03 am)
Replying to: stumped6 (Jun 29, 2006 7:29 pm) Could be but would guess not. Make sure the large vac line to the power brake unit is not leaking and look at the intake end too cause that connector can be loose and rotate. But I would look at the rears as well - those rear calipers are junk and I always replace with rebuilts when doing a brake job - thay have a plastic type piston single and jam and the slide pins often are not pulled out of the bracket and greased - you have to pull them completely off to verify all this - been there and one stuck slide pin raises hell with the operation of the whole system. Easliest way is to buy "loaded" calipers that have the bracket/caliper/slide pins/pads all and you bolt it in and solves many headaches - only about $55-60 on rear each. Fronts are better cast 2 piston and I have had no problems with those except rusted bleeder screws and I replace those. After you do this reply back. Replies to this message: stumped6 (Jul 01, 2006 4:11 pm)
#12 of 75 Re: jimmy brakes [repairdog] by stumped6 Jul 01, 2006 (4:11 pm)
Replying to: repairdog (Jun 30, 2006 3:03 am) Hey repairdog, thanks for the info. I checked the system again for air, and found the master cylinder full of black powdery stuff. I thought the MC was the problem and replaced it. I got air out of the front brakes and they seem to be working, but have no fluid pressure on both rears. You may be right about the rear calipers, but now I suspect some of the black stuff may have gotten into the ABS system.
#13 of 75 Hard brake pedal by germca Jul 04, 2006 (11:17 am)
I have a 1997 gmc jimmy SLT. I've replaced the brake booster 3 times. The last with a NEW booster. The brake pedal is harder than ever! I've checked the vacuum line and it is good. The pedal doesn't appear to be hung up on anything. Yet, still the brake pedal is high and hard. Any ideas as to what could be the cause? Replies to this message: shep74 (Jul 16, 2007 10:28 am) repairdog (Jul 16, 2007 3:06 pm) steve_ (Jul 16, 2007 5:46 pm)
#14 of 75 Squealing Brakes by nhomad Jul 10, 2006 (9:17 am)
I Recently bought a 04 Blazer. The brakes are new all around, stops like a charm. However...when slow braking between stop signs (light braking at 15-20 mph) they squeal. I was tols at an auto store that new breaks will do that and it's a matter of wear. Is this true or should I call the dealer?   Mark Replies to this message: repairdog (Jul 10, 2006 4:37 pm)

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