After replacing the rear brake rotors, pads and bled brakes, I still have a spongy brake pedal?

UPMM019

MEMBER
2005 GMC ENVOY
4.2L
6 CYL
4WD
AUTOMATIC
200,000 MILES

I changed rear brake rotors, pad, and bled brakes farthest to nearest, but still have a spongy brake pedal.

do I need a scan tool to bleed ABS module or does this year not have that? Or do any vehicles with ABS have to have a scan tool to bleed the ABS module?

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

If the brake master cylinder was allowed to empty, you need to perform an automated bleed procedure to get the air from the ABS module.

To answer your question, not all cars with ABS have this procedure, but this specific vehicle does.

If you look at the pics below, I included the directions for the automated bleed. It will require a scan tool that can communicate with the ABS module.

Let me know if this helps or if you have other questions.

Take care,

Joe

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Saturday, June 12th, 2021 AT 10:31 PM

UPMM019

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216 POSTS

I now have a scan tool with the ABS bleed option. I need to replace the brakes on this 2004 GMC Envoy - in the past I was just using the Power Stop brake kits from Amazon.

I am curious to know if I should look for a different brand - I am looking at some TRQ from 1A Auto.

This vehicle is at 200,000 and basically is a daily driver in town. Maybe 10 miles a day at max and maybe a few 60 mile trips twice a month so not a lot of mileage going on it. Not sure that make any difference when picking out rotors/pads, etc. I am not sure if I should be going with these slotted rotors or standard and also Semi-Metallic vs Ceramic pads.

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Tuesday, June 22nd, 2021 AT 4:50 PM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

I feel if you are getting it from them, you should be fine.

As far as the brakes, if that is all you drive that much, save the money on the brakes. Just get a lifetime pad. That way you won't have to pay for the pads again, regardless of what you get.

Slotted rotors are for better cooling and honestly, if you are driving at high speeds or on mountain hills, you really don't need them. You mentioned what the vehicle is used for, and it really doesn't sound like they are needed.

Let me know if I can help or if you have other questions.

Take care,

Joe

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Tuesday, June 22nd, 2021 AT 7:44 PM

UPMM019

MEMBER
216 POSTS

What is considered a Lifetime pad? Are you suggesting to go with the A1 TRQ or stay with using the Power Stop?

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Wednesday, June 23rd, 2021 AT 5:56 AM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

Places like AutoZone offer a free replacement of brake pads if they wear out. I'm not familiar with what you are referring to. Basically, I always purchase a standard brake pad from them because if they wear out, I get new ones for free. It's a great warranty.

Joe