I have a 2019 Chevy Tahoe Lt with 107,000 miles. I just got the Tahoe back from the dealer after getting a brand new OEM transmission, driver side motor mount & and new cooler lines. I’m noticing specifically around 1000-2000 rpm the truck feels like it bogs around these rpm’s (Not consistently it depends on how much throttle you give it around these rpm’s, if I go very easy on the throttle around these rpm’s it feels like the truck is in 6th gear and struggling to accelerate and starts to shudder) and it’s driving me nuts. I saw another person had the same exact issue in another thread but didn’t see any answers there. The truck isn’t throwing any codes either. Another thing I think is worth noting is that I only use E85 fuel in the truck, occasionally I put 93 in to help clean out the fuel system but the main fuel I run is E85. I had a suspicion of it maybe being an injector or fuel pump or something that has to do with fueling but I’m not getting any check engine lights that say an injector is stuck open or closed etc. Any insight would be appreciated.
Sluggish acceleration/ at low rpm’s only
- Thread starter 19tahoe
- Start date
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Did it do this before the transmission was replaced?
How long since the throttle body was cleaned?
What do the short- and long-term fuel trims look like?
How long since the throttle body was cleaned?
What do the short- and long-term fuel trims look like?
Honestly can’t recall, the transmission was super rough before then so I’m not sure if it was masked by how rough it was running at the time. I’ve never cleaned the throttle body so I can give that a shot. Also I put 93 in it once a week.
