Stuck Brakes 05 tahoe z71

[Wells596]

 

[OR VietVet]

He did just the passenger side front or rear caliper? Why not both? Was the caliper done for this issue or another issue?

I would look very carefully for any wiring connection problems, corrosion, loose, pins pushed out, etc.... Check all grounds.

 

[rockola1971]

He did do the passenger caliper. All I’ve done is put a set of rear pads on it and try to diagnose the brake issue. Bled them as I thought maybe they didn’t bleed all the air out. Other than that haven’t done anything.

Is "Brake" light on when engine running? Andy ABS messages in message center? How did you bleed the brakes? Do you have a firm brake pedal with engine running? You need a scanner to identify which module(s) are throwing the U1000 code. Me thinks the ABS is a part of it and its no talky which would explain why your brakes arent releasing because you have a solenoid in the ABS manifold not being told to open/close.

 

[Wells596]

Is "Brake" light on when engine running? Andy ABS messages in message center? How did you bleed the brakes? Do you have a firm brake pedal with engine running? You need a scanner to identify which module(s) are throwing the U1000 code. Me thinks the ABS is a part of it and its no talky which would explain why your brakes arent releasing because you have a solenoid in the ABS manifold not being told to open/close.

Not until I pulled both fuses for the ABS. Now I can drive it for about 20ish minutes before they start sticking, I know these things have an issue with solder cracking is that possibly the cause? Thanks for all the help.

 

[rockola1971]

Not until I pulled both fuses for the ABS. Now I can drive it for about 20ish minutes before they start sticking, I know these things have an issue with solder cracking is that possibly the cause? Thanks for all the help.

U1000 is telling you that the PCM is not talking to a module. You need to find out which module it is with a decent scanner.

 

[Wells596]

U1000 is telling you that the PCM is not talking to a module. You need to find out which module it is with a decent scanner.

I've been seeing you guys talk about tech2 scanners. Any reputable place to get it for not a million bucks? Also I'm not sure how familiar you are with the Chrysler world but is it similar to jscan for the jeep world?

 

[rockola1971]

I've been seeing you guys talk about tech2 scanners. Any reputable place to get it for not a million bucks? Also I'm not sure how familiar you are with the Chrysler world but is it similar to jscan for the jeep world?

I got mine on aliexpress around 8yrs ago. Make sure you click on the GM version so the right software comes with it. You can also get a MDI unit which is a emulator of the tech 2 but is connected to a laptop so you dont get a handheld unit with screen like the tech II but you do get bidirectional communication with the 2009+ vehicles. Keep in mind the tech II is only good for GM up to around 2009 model year. Anything else newer requires MDI or equivalent because of protocol changes GM made.

https://www.aliexpress.us/item/3256807395595320.html?spm=a2g0o.productlist.main.21.357f227a99YKsA&algo_pvid=8258ab6e-b336-4aff-9553-0b5b30de0075&algo_exp_id=8258ab6e-b336-4aff-9553-0b5b30de0075-10&pdp_npi=4%40dis%21USD%21416.59%21291.61%21%21%212899.00%212029.30%21%402101fb0a17275632965573105e9fd5%2112000041381517807%21sea%21US%210%21ABX&curPageLogUid=bNzFLJKlga7o&utparam-url=scene%3Asearch%7Cquery_from%3A

The Tech II is what GM service techs would use on your 2009 and older vehicles at the dealership. It is way much more than a regular old scanner. It is bi directional which means it can read AND write/control. For instance you hook up and turn fuel injectors on/off individually for troubleshooting. Operate a certain HVAC door motor for troubleshooting. Bypass a safety in your AC for troubleshooting. Even erase the current security code on your factory radio and default to 0000 which comes in handy if you have to pickup a junkyard replacement. It will also flash a GM program to your BCM, PCM, etc. You have to buy the license for it which is cheap enough. The tech 2 pays for itself in one day of working on your vehicle. I paid around $300 for mine.