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  1. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    One day randomly my 2003 trailblazer gave me a “service 4x4” light along with this light my switch for my 4x4 stopped working / illuminating. When I twist it it does nothing so I scanned the codes it gave me the following C0237 -Rear wheel speed signal Erratic C0281 -stop lamp switch circuit...
  2. OEM Issues
    Hi, I have a 2006 trailblazer LS with the 4.2L with 140k mi. I'm a bit stumped so I figured I'd reach out here. About 5 years ago, I replaced the steering wheel position sensor due to stabilitrac dash light. It fixed the issue. For about the last 5 months I've had an issue with my ABS activating...
  3. 02-09 General Tech Q&A
    Hello all, I have a 2008 Chevy Trailblazer 4.2L 6- Cylinder 4x4. It just rolled over 80,000 miles. The problem I am going to describe has been happening off and on for probably the last 30,000 miles, but never consistent enough to troubleshoot. Currently it has been doing it more and more...
  4. Brakes
    Hello all, so I have a bit of an issue I have an 07' trailblazer LS with the abs light on and stabilitrak light on, the previous owner had redid the rear end with a new rear axle. ABS light and Stabilitrak and Service Stabilitrak on. ABS reader said LR and RR sensor malfunction. My Mechanic told...
  5. 02-09 Brakes, Suspension, Wheels and Tires
    Anyone have the same problem? After replacement of all calipers, master cylinder, brake booster and bled multiple times using gravity method, bottle method: What’s been done to this 2002 Trailblazer Flushed out all old brake fluid Replaced all calipers, hoses and rotors Bottle bled and vacuum...
  6. 02-09 General Tech Q&A
    Yesterday evening I had to hit the brakes when some wildlife flew up in front of me. I was traveling 40mph at the time. After the vehicle stopped the brakes would not disengage. Fortunately another driver stopped and suggested turning off the engine and then restarting. That worked, the...
  7. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    I got a report from OnStar that I have a problem with my ABS. I pulled the codes and had a C0055 and C0161. Now I replaced the rear wheel speed sensor once before and cleared the code. But now I have this other code referring to the brake switch. I don't have TCS. Now looking back at my code...
  8. 02-09 General Tech Q&A
    This is a new post from a previous thread. More stuff has happened, so it seemed logical to start a new thread with it. Last Tuesday, the front passenger door just electrically died. Nothing with power works, no power lock, no power window, no power mirror, no door jamb switch, no switch...
  9. Brakes
    '05 Isuzu Ascender: I was stopped on a steep hill waiting on traffic, facing uphill. I had eased off the brakes and rolled backwards a little bit. When I pressed on the brakes to stop again, there was a dull popping sound from under the hood in front of me, a noticable pulse in the brake pedal...
  10. Brakes
    Hello all! Last winter up in Michigan right after we had the polar vortex hit us dropping the temperatures down to -40 I started to have problem with me abs sensors. At the time I blew it off because it was winter and theirs ice and snow everywhere so I thought the abs was just working the way...
  11. OEM Issues
    2008 trailblazer with movable floor pedals Had to install a new brake light switch. Lights work great but now my ABS and Parking brake warning lights are staying on the dash. Is there a reset I missed somewhere? Part was exact # as old switch.
  12. Brakes
    okay -- follow me, current problem each front brake caliper 'grabs' through the day, not both at the same time , left / right take turns, it is 'fine' when cold starts grabbing through the day, the pedal is normal then feels too high when pads are 'dragging' - i have replaced one caliper...
  13. OEM Issues
    Hello all I am having an issue with my TB It is an 07 LT with the I6 and 4WD, it has about 150k on it. The ABS or TCS on the car is overly sensitive and prevents the car from stopping on many occasions. Its very dangerous as the TB will roll really far with the ABS going crazy when any other...
  14. OEM Issues
    Been having issues with my brakes locking up with not much pressure on them all,so i brought my car to autozone today and ran the code reader on it. i got codes: c0267, c0291, c0281 the abs light is not on but the brake light next to it is. i already checked the fuse (i believe its the right...
  15. Brakes
    A couple months ago I had someone in traffic tell me I had no brake lights, so I get home and check and both left and right brake lights are not working but the upper middle one is working fine. I get the correct new bulbs from autozone and swap out the old with the new ones, I start the truck...
  16. The "How-To" and DIY Section
    Hi to all, not sure if I'm doing this right or even in the right forum but I'll try.... I have a 2006 TB Lt, I have replaced the front brakes, front rotors, front wheel bearings with hubs and abs sensors, replaced all brake fluid, even rotated the tires. I have disconnected the abs sensor from...
  17. The 02-09 "How-To" and DIY Section
    My ABS is kicking in at low speed stops and I've been going over some forums and found that alot of people have had this problem after doing maintenance to the hubs or they had bad hubs I have neither. What I do have is a leaking rack and pinion fluid coming out of the boot, could a build up of...
    abs
  18. General
    My ABS is kicking in at low speed stops and I've been going over some forums and found that alot of people have had this problem after doing maintenance to the hubs or they had bad hubs I have neither. What I do have is a leaking rack and pinion fluid coming out of the boot, could a build up of...
  19. Brakes
    For some reason the abs will kick on and off while driving. I haven't experienced yet. It's my grandfathers 05 Envoy base model not sure if its the sle or slt or even the difference between the two. Anyway it will kick on and off nothing that causes you to get in to an accident. I was talking...
  20. OEM Issues
    Hello, I have a problem and need help, I have a 2005 GMC Envoy 6cyl , My abs/brake and 4wd light are on, 4wd sometimes goes off but for a few minutes, I went through forum and did pretty much everything that I found that could be wrong, 1) replaced ignition switch 2) Cleaned ground under driver...
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