replaced brake system on 97 1500 brakes still mushy dash light on now

Asked by Jan 10, 2015 at 01:04 AM about the 1999 Chevrolet Silverado 1500 LS LB RWD

Question type: Maintenance & Repair

brakes were mushy then calipers locked so was inhibiting
performance changed brake booster calipers disks and back one
bled them still mushy repacked bearings calipers locking up
again

4 Answers

9,700

pushrod length too long ? bent shake brace.Firewall flex or broken welds. debris trapped between master cyl. piston and snap ring, incorrect part usage. Internal p[rblems in contol valving your system uses. Get it to a brake specialist or your GM dealer because you need some experienced minds viewing and judging the results of the tests performed. having contaminated fluid can be enough by itself to cause much of this. Discuss thoroughly with service manager and ask for tests and diagnosis rather than a list of operations performed that fix it by dumb luck.

1 people found this helpful.
123,885

Did you properly bleed all the air out. Sounds like you still have some trapped in the system. Also brake calipers locking up is typically caused by the rubber hose going to them being internally collapsed. This tends to happen shortly after brake calipers have been replaced due to the hoses having been moved around a lot during the caliper change.

9,700

To add to dandyoun's info, letting the calipers weight hang on the hoses can stretch and tear them internally if they have had time to age, or have been enduring stretching from being pulled upon. That is the logical explanation if you were to damage both and have the symptom appear at both at the same time.

9,700

Fluid contamination can also explain why both were staying applied. The internal softening of the hose liner can lead to obstruction after handling improperly during a brake job. The tests would include inspection for geyser after warm at the offending wheel(s). Then remove the hose and attempt to pass shop air thru in both directions. That is, of course, if you had the symptoms lead there, and your vehicle passed all the inspections mentioned previously. You know your vehicle and your circumstances better than anyone , so if these conditions were present, you can decide for yourself. Since the bleeding is crucial to a safe system, I still recommend a brake shop, or the dealer for the bleed tool.

Your Answer:

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 154,936 nationwide Silverado 1500 listings starting at $1,700.

ZIP:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    3,500
  • #2
    Rowefast
    Reputation
    2,480
  • #3
    Andrew Olsen
    Reputation
    2,270
View All

Related Models For Sale

Used GMC Sierra 1500
777 Great Deals out of 60,201 listings starting at $1,500
Used Ford F-150
2,281 Great Deals out of 188,281 listings starting at $1,300
Used Chevrolet Silverado 2500HD
337 Great Deals out of 29,195 listings starting at $2,795
Used Dodge Ram 1500
335 Great Deals out of 9,325 listings starting at $1,500
Used Toyota Tundra
461 Great Deals out of 37,862 listings starting at $1,750
Used Toyota Tacoma
421 Great Deals out of 49,181 listings starting at $2,400
Used Chevrolet Tahoe
629 Great Deals out of 38,014 listings starting at $1,199
Used Chevrolet Camaro
233 Great Deals out of 26,932 listings starting at $4,000
Used Ford F-250 Super Duty
476 Great Deals out of 37,892 listings starting at $1,999
Used Ford Mustang
317 Great Deals out of 38,105 listings starting at $1,312
Used Chevrolet Silverado 2500
123 listings starting at $5,995

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.