Chevrolet Trailblazer Problem Report

Chevrolet Trailblazer I have a vibration when in drive while holding the car still at a stop light

(116 reports)
Vehicle vibrates when in drive while stopped at a stoplight. Vibration stops if vehicle is placed in neutral or park -
Vibrating noise coming from engine while sitting at light. Stops if I hit the gas and hold the brake at the same time. I just had the engine/transmission mounts replaced and this did not solve the problem! -
2005 Trailblazer: For the past 1 ½ years it has made a loud vibrating noise that no one has been able to identify. It is not a valve and apparently not the motor mounts. When I come to a stop and the engine is engaged, it loudly vibrates. When I put it in neutral or park, it quiets down. It seems worse if I am on even a slight incline. Neither our mechanic or the dealership have figured out what it is. The dealership would LOVE to figure it out by fixing everything that isn't broken first. -
I experienced this problem. Had a dealership look at it several times and told me I was crazy. Basically, when sitting at idle while in drive the engine would rattle as if a rough idle. I started taking my vehicles to a smaller repair shop. They found that my Trailblazer was 25 computer updates behind and that after updating it corrected the problem. -
Rough vibration when in drive at a stop light. Once in neutral it's not as rough -
Vibration seems to be worse in cold weather while the engine is still cold. -
My trailblazer has a rough idle when at a stop light. It even turns off completely sometimes when in drive. Putting it in neutral helps a lot. My dad is a mechanic and he is even stumped. -
Check engine light would come on for a while then go off. It finally stayed on all the time. The engine vibrates when idling in gear, but no vibration at all when I put it in park or neutral. The vibration was worse when the a/c was on. I replaced the a/c idler pully but still vibrates. No driving issues and rpms arent affected. Took it to autozone to let them diagnose it but they couldnt get a reading. I've had a few people tell me it could be the 02 sensors but I wanted to get more feedback before I try to replace it. -
I have a vibration when in drive while holding the car still at a stop light -
same problem , mts are good , trans is good , drives good . -
Found the problem! I started having this problem last week. My 05 trailblazer would jump and stutter when I was idling. It got better when I put it in park or neutral but this only helped for a day. It got worse and the check engine light came on. I had a repair done and I was told that Chevy reported issues with the seal that keeps water out of the engine. We had a huge rain storm the day the issue started and the faulty seal allowed water to pool around the spark plugs. The fix (from Chevy) was to check spark plugs and coils for signs of water damage and if there was any they needed to be replaced. I had to have multiple spark plugs and coils replaced but this DID fix the problem. They also replaced the seal to prevent this from happening again. With so many people having a similar issue I'm wondering if it is being caused by the same thing? If so I'd sure like to know how many people are affected and why Chevy isn't doing a recall for this problem. -
Engine has severe vibration when in drive, at a stop, and cold. Take the vehicle out of gear, accelerate, or let it warm up and the problem goes away. -
I had this. First had a fuel injection throttle body cleaning did not help. Went to another shop they replaced motor mounts that fixed it. -
vibration when i stop at a light. -
A vibrating only early in the morning then after vehicle is warmed up it stops -
When I put my foot on the brake and idle at a stop light my 2007 trailblazer runs rough feels like it wants to stall it does get better when the truck warms up -
the current problem is that when my 2007 chevy trailblazer is at a stop it vibrates profusely. It does not vibrate while I'm driving only while I'm at a stop and it is In Drive gear. -
Just replaced transmission motor mount and both engine mounts , had the throttle body cleaned and I still have a very bad vibration from the engine. My steering wheel shakes bad and you can feel it through the whole truck. Sometime my idle drops then revs up. I have taken it to a mechanic several times and they tell me they can not figure out why it shakes! -
I have a vibration when in drive while holding the car still at a stop light. I live in a hilly area. If the car is on an angle at a light the vibration is much worse. If I pull the trans out of Drive into Nuetral, the vibration is reduced by 90%. Logic says its an Engine mount, but I'm waiting to see what others have said. -
Vehicle idles poorly. Slight increase in fuel consumption. -
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