Originally Posted by cj30241
Taking it in to the shop next weekend. I'll post the results.
2009 Tacoma-Auto 4-cyl
I received a tip that a Service Bulletin is posted on this exact issue. I took the truck to the dealership and told them in great detail what it was doing. At Slow steady acceleration I would feel something reminded me of going over a mild set of those 'slow down' strips in the road. Would happed between 28-30 mph and again @ 38-40. Related to shifting. It's Automatic.
They did my 10,000 service, and were supposed to check this out. Tech came out saing all looks good...that will 54.95 for the service. No mention of the problem!!
I found another tech Manager, went over the whole things with him and told him to look up T-SB 0096-09.
He found the SB, re-checked the truck, couldn't make it replicate the shuddering but wrote it up anyway as if he did so it would be covered under warranty, recalibrated the ECM -engine control module.
I've driven it for 2 days and it seems fine now.