Chevrolet Blazer Noises and Sounds
I am consolidating discussions related to those mysterious sounds and noises we all experience with our vehicles.
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There is also a buzzing noise coming from behind the instrument cluster panel. The gearshift indicator on cluster panel don't light up to show you what gear you are in .
Next, buzzing behind drivers side araea could be another simple one - the PCV vibrating and if your throttle cable has a broken plastic holddown at the rear of the intake it now hits the PCV and thats it - add a zip tie to the bracket and cable on the rear of the intake. If pass side could be the problem with the multifunction switch in the steering column and it makes the flasher and blinker relays vibrate behind the glove bow so when it happens if back there carefully bend the top left inside of glove box so it drops past the stop and look/feel/listen to the relays.
Last, replace the bulb per your owners manual for the gears.
BTW, those are simoleons!
Finally, the 4 tires must match on a 4wd or you will eat the transfer case up when you go to 4wd - front driveshaft always turns on these and 4wd engages the pass side axle coupler. I use the original Uniroyals on mine and they are about $100 each and ride is better than many others unless you are going to Michelins.
Thanks for your input.
All owners should fill the coolant reservior to the Hot full line when its cold and always look at it on a regular basis - as soon as a drop is seen (same temp each time) then check for a coolant leak.
Sound occured before changing upper and lower ball joints on both sides, new brake pads recently installed in the front (rotors good), neither the ball joints or brake pads have made any change in the noise.
PS: Evidently Semolians are Mardi Gras Indian Warriors... just found that out... and now on to the cataclysmic converter lessons.
Very much appreciated,
Kenagirl of the right lane.
The term "simoleon" was a slang term for dollars based on the name of a 17th century engraver, Simon, who designed the British sixpence coin (affectionately called "Simons" oddly enough!) combined with the name Napoleon. I don't think it was meant to be flattering but it was adopted and commonly used for some time.
We now return to our regularly scheduled program ...!
to the bottom of this?
All the vac lines and the vac actuator for the EGR work? Timing set right? Could be dirty pistons/valves or a clogged exhaust also.
Thanks for any help anyone can offer.
I don't know where to start and don't have a lot of $$$$ to put out for repairs. Guess I will take it to a guy who is considered a good mech? Got to be careful of taking it to just anyone nowadays!
Need more info: year, 2wd/4wd, problem, sounds, when/where, etc to try and help.
At 1600-1800 RPM under load, the engine has a light rattle-like sound coming from the front of the engine. Does not occur without a load. I have heard lots of sounds from engines but this is not one I have heard before. Can be sitting still (power brake in drive or reverse) and it isn't coming from the A/C. I figure the engine shifting on the mounts is maybe causing something to touch? Tranny line maybe???
Ever hear this on one of yours?
The rear brake calipers do get hung up and the slides need greasing inside the brackets (have to pull off caliper, then pop the rubber boot off the bracket and pull slide bolts out,grease ,reinstall - this is a commonly missed procedure that causes the rears to drag and often eat one side of a rear rotor. Bigger bolts are 18mm not a standard size for most wrech or socket packages you buy but GM uses it alot!
1. 99-01 have the secondary air injection system that includes a check valve on each exhaust manifold and they internally rust out and are spring loaded so look at them and the rubber L hose for burn out and if you tap on them and they rattle thats it. Valves are sold at all stores but hoses GM only. They always are rusted/frozen on so you have to remove the 2 small bolts on the exh and change the valve out of the vehicle in a vise or GM has the valve and pipe new so much quicker - no vise forget it.
2. PCV rattle can also occur if you replaced with a cheap aftermarket or the throttle cable has a plastic mount on the rear drivers side of intake that breaks off, cable contacts PCV, noise occurs - zip tie the cable back in place all gone noise - silly but true - common after lower intake gasket done.
A neighbor mechie heard me describing the noise and he said to check the heat shield on top of the cat. He has seen a couple of these where the spot welds that hold the shield on will pop loose and make a soft rattling sound when the exhaust system flexes under engine load. I will check that out this weekend.
That, and you know what you have when you're done. Junkyard diff has no warranty.
I have a 2002 4wd Blazer 4x4 with about 80k on it. Truck runs very well.
I am noticing a rattle in my dash when driving. Bumps or no bumps. It is not the hood spring washes cause I done fixed that. The rattle seems to come from the vents where the air blows out from defroster. When I put my hand lightly on the vent it stops.
So tell me anything I can do? Or should I crank up the AC DC?
By the way the last time I got really great advice.
I do not see any screws for the lower plastic dash. How do I access them if I have to.
I tightened up the speakers. I may have made them too tight. Can they be too tight.
Do I have to take the glove box out to see that area behind it?
Sorry for so many questions. This is my first blazer. I really love my truck just getting to know her.
Thanks for your reply.
As for the vibration are you sure its the pedal or are you hearing a buzzing vibration and feeling it in the pedal - look at the PCV on drivers side valve cover and see if the throttle cable is against it - common as the rear plastic push pin breaks off so secure it to the upper intake with a zip tie and fixed. Or replace the PCV if its vibrating still.