[Beetle140]

Does anyone else have an issue with occasional noise when accelerating ? I’ve had it in to the dealer but naturally it didn’t make the noise while they had it. My husband thinks it might be fuel pump but dealer said it was fine. It’s almost like a grind or growl and when accelerating (including when cruise control is in use). Thank you!

 

[Blazerfan]

What rpm range does the noise occur at?

 

[nuflat]

I had a similar issue with my 2019 and I took to the dealer. Mine you could always hear when accelerating in low gears. What did they do? They drove another one in the lot and told me it did the same thing and that it was normal! I said do you think it could be an issue with both? They had to think how to respond to that one. I had other issues and ended up doing a GM buyback and got a 2020. Low and behold no rattling noise when accelerating. I saw either on here or another forum where someone had that issue and convinced the dealership to replace exhaust system and that solved the problem.

 

[Beetle140]

What rpm range does the noise occur at?

Almost always at 1600 rpm (various speeds). Thank you!

 

[Blazerfan]

Do you have a 2019 or 2020 model?

 

[Beetle140]

It’s a 2019 premier.

 

[tpierce09]

@Beetle140 I’ve had the same exact issue with my 2019 Blazer RS. I’ve been dealing with the dealership for a year now on this problem. Every time I take it in they tell me something different, fix something weird and then send me on my way. When I drive the car off the lot, the noise is instantly back. I’ve noticed that the issue only ever happens once the car comes to a complete stop, engages in the auto stop, and then the noise happens when the car starts and I accelerate again.
The first time I took my blazer into the dealership they told me I had a broken baffle. They fixed that and had me pick up my car. Noise still existed.
The second time I brought it in, they told me nothing was wrong and that the computer/sensors were not indicating any issue on the car. Noise still existed.
the third time I took the car in I had the tech drive in the car with me to verify that he also heard the noise. They confirmed that noise wasn’t supposed to be happening, and eventually replaced the entire exhaust system. This fixed the issue for several months until this past week.
the fourth time I took my car in to have it looked at they found a broken shifter cable and told me that’s causing the noise. Picked up my car today and the noise is still there.
I’m at a loss here, and maybe it’s time to just accept the annoying sound.

 

[RSMTL]

@Beetle140 I’ve had the same exact issue with my 2019 Blazer RS. I’ve been dealing with the dealership for a year now on this problem. Every time I take it in they tell me something different, fix something weird and then send me on my way. When I drive the car off the lot, the noise is instantly back. I’ve noticed that the issue only ever happens once the car comes to a complete stop, engages in the auto stop, and then the noise happens when the car starts and I accelerate again.
The first time I took my blazer into the dealership they told me I had a broken baffle. They fixed that and had me pick up my car. Noise still existed.
The second time I brought it in, they told me nothing was wrong and that the computer/sensors were not indicating any issue on the car. Noise still existed.
the third time I took the car in I had the tech drive in the car with me to verify that he also heard the noise. They confirmed that noise wasn’t supposed to be happening, and eventually replaced the entire exhaust system. This fixed the issue for several months until this past week.
the fourth time I took my car in to have it looked at they found a broken shifter cable and told me that’s causing the noise. Picked up my car today and the noise is still there.
I’m at a loss here, and maybe it’s time to just accept the annoying sound.

I'm the one who had his exhaust system changes couple of months ago and no more noise since. I cross my fingers. Could be the resonator that is defective again as the last time. You should require the dealer to change the exhaust system again if it's the same noise.

 

[2019BLAZRS]

i got the same issue, 2019 RS
Also had it into the dealer 3 times, and basically, the blazer is very sophisticated. if there something wrong, the computer will notify you. So been dealing with it sense.
I got the extended warranty, and it's been noted in vehicle history, so if something happens, I can say I told you so.
As for the noise, ya, it's annoying, but I'm so used to it now, I just go along with it, turn the radio up. Winter time can be fun though, just give'r the gas, get sideways, that noise plays into the fun of it. lol.