My 2006 chevy HHR is having a braking problem. I replaced the brake pads. However, when I press in the brake I hear a hissing sound and suggestions

The problem can be your tires. To verify rotate front tires to back.

Hi Rashid, I'm not very sure what sound you're hearing. If it's a metallic sound take the vehicle and have the brakes checked for wear of pads and shoes and have whatever is worn replaced. Regards Johngee10

sound like ur pads are wore down to the sensors

This time only, your dealer is right. The sound is the Brake to Shift Interlock (BTSI) solenoid releasing the shift lever when you apply the brake. The sound is normal and won't hurt anything but I understand your concern.

Changing the pads is very straight forward and is no different from any other disc brake equipped vehicle. However, if you have never changed disc brakes before I would NOT recommend you do so on you HHR without either a shop or technical manual. Changing the rotors is very easy - they slide off the mounting studs once the disc calipers are removed.

they prob just looked at the outter pads ,the inter pads will ware out first thats where the pressure is applied , you need too pull the callipaliars too check them!!

On my cobalt (same platform) there is a known bad engine mount that clunks (like you have bad shocks) when you go over bumps.
If you look under the car from the front, you can see its a circle, (supposed to be ) filled with a rubber/composite bushing. They crack and this causes the banging.
It is supposed to look like this...

However, the rubber breaks off and your engine is flopping around.
This part needs a press to press out the old piece, so a mechanic would be the best repairman for the job.


The scraping noise is a different problem. I would suggest CV joints, but being a 2006, they shouldnt be bad unless you tow, or accelerate heavily.
I would lean toward a bad wheel bearing with the symptoms you are describing - also a job that requires a press.
You're in for quite a bill!
Figure $250 each wheel bearing and another 100 or so to fix the mount.
Dealership would be 2x that.
Good Luck!!

good day,

although it can be done yourself, i suggest that you seek assistance from a competent technician from chevy when replacing your brakepads since this involves proper settings and allignments. it may also need special tools to disassemble and reaasemble the unit.

i hope this will help

Hissing or scratching sound is usually related to consumed brake pads/ shoes or deformed disks.
Usually you fix it by replacing brake pads, in some case you also need to change the disk, but this is less frequent, and happens when you keep circulating with consumed brake pads for many miles.
If you have a vehicle with brake shoes instead, you need to replace and calibrate brake shoes .