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By greta simanek
I'm not sure how if I'm checking it right. No power to my breaks in rear or any lights in the back headlights works fine..maybe my brake light swith is bad I've checked it with my probe light maybe I'm doing it right.sry I'm about 70% mechanically inclined ..need some help..thanks
New vibrations after clutch job . Any suggestions?
Hello, I noticed on my 2004 Chevy Silverado 2500hd 6.0 the brake lights were out. Looking further into it it’s only while the headlights are on and the truck is running, all is working fine while truck is off. As soon as I start the truck the brake lights work until I turn on the headlights, then they fade off like they loose power. The turn signals work fine either way and they are on the same led. I’m confused, I can’t find anything wrong. Thanks in advance!
By Richard Burton
I have a 2020 HD Silverado Diesel.
I noticed after several hundred mile a weried sensation coming from the steering column. When I’m driving down the highway for example and driving straight , when I turn the steering wheel slightly to the left of right I feel a slight vibration and is if there is play in the steering column. Like a disconnect feeling. There’s almost a slight grinding feel like it might be coming from the steering box. When I’m turning on a long turn left or right I can really feel it, negative feedback reverberating through the steering column.
Dealership has replaced the steering ad steering box, put on new front tires and torque all suspension parts up front. After all these repairs I still get this vibrations, shimming feeling in and through the steering column. Also when the truck is idling with foot on brake and I turn the steering wheel slight to the left or right I get a slight vibration in steering snd I can feel it in the brake pedal. I’m very frustrated because I got a call today from dealership and there basically are now saying it’s within the factory spec of vibration.
I dislike this feeling the steering column has this bad feedback I can feel in the steering column. I’ve let three people drive the truck and they all are feeling what I’m feeling. Any help or advice would be welcome... Thank you
Long history but short of it is long standing vibration seems to be related to tire temperature.
2015 GMC Yukon. New Tires (Bridgestone Dueler HL) 1/31/2020 w/Alignment. They noticed front right strut was leaking and replaced. Vehicle seemed to drive without issue for at least 2-3 months.
COVID-19 hit and I hardly drove anywhere for a few months. There was a month span where my truck left the garage only a handful of times. Tires have 3k miles on them despite being 9 months old now.
Around July I started driving a bit more and I noticed a pretty bad road vibration and started looking at remaining shocks. Replaced 2 years and it seemed to help as they were leaking and then remaining front strut as it was leaking hoping this would resolve my issue.
Took it to the dealer and they road force balanced and rotated, not finding any suspension or tire issues. When I drove away, there was a hard pull to the left. Took it to local shop as I figured it was an alignment but alignment was dead on. They road force balanced and rotated and pull went away. I later found out one of the tires had conicity and was replaced and pull went away.
This week in Houston we had a bit of a cold front and I noticed it was driving back to normal, like earlier in the year.
Yesterday I was driving around and noticed as soon as the tires started to heat up to 38psi (Cold tire pressure is 35psi), the vibration started to get worse so I pulled over and deflated 2 psi. Next tire got up to 38 and vibration started and I did the same thing and it went away for 10 minutes but came back as the tires seemed to warm up and inflate more due to that.
Today I drove trying to reproduce and it seemed to drive better than yesterday and took about 40 mins to get some vibrations that were not even as bad as they have been before.
Am I working out some flat spotting? Or is it possible that some tires that have issues that show when they warmed up? Or is it possible I have a suspension issue that slightly under-inflated tires are masking?
I plan on going back to the dealer and have them run a picoscope to confirm the source of the vibration and look again. Questions I should be asking them, things I should verify they're checking, etc? This issue has been driving me crazy for months and seems to be going away on its own due to cold temp (55-60F in the mornings, high of 85F) versus the triple digits we were getting in the summer.
Looking back at the Jan-March timeframe it would have been around the same temp here so I'm wondering if I'm exposing a temperature related issue with the tires that shows up when the ambient temp is much warmer or the tires have a chance to get hotter.
I have the full story documented here before I even thought it might be tire related
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