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By 1998sleaze · Posted
Hello, I have a 2018 GMC Sierra 1500 that I recently changed both motor mounts on due to the driver's side being blown out. After replacement I seem to have a steady vibration that I can feel in the pedals and the back of the seat. At this point I'm convinced that the aftermarket "Anchor" branded mounts I used are not performing as well as OE, the only real reason I ended up using the mounts in question was because my local dealers were out a few months to get a Driver's side mount. I've tried "Neutralizing" the mounts according to the motor mount TSB published for these truck to no avail. My trans mount is also in great shape and seems to be absorbing vibrations swimmingly. As far as I can tell there is no issues idling, my idle RPM is steady and I've recently put GM plugs and wires on, however, I have not cleaned the throttle body or intake valves. Any one else have a similar experience with aftermarket mounts? Patience certainly is a virtue that I wish I exercised here. Thank you! -
I still saw people out for runs, on their bikes/motorcylces, jeeps with the doors off driving around here the past 2 days. I guess we are just used to it here haha. Tasted like a bonfire the last 2 days. -
The TCM has to be flashed before it can drive. If you installed it the way it is, it has the OS (operating system/program) from the 2010 truck you got it from. That will not match with the VIN/OS pair that your 2013 truck has. You can do the full install. Then tow it to a dealership and they can flash the trucks PCM/TCM with the latest program for your VIN.
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have a 2013 sierra Denali. The motor let go and the trans was getting there as well. I just bought another l9h with a 6l80 already together but out a 2010 sierra Denali. Am I plug and play and drop in and bolt up no ecu change or tuning? Does the tranny have different programming is it just gonna go into limp mode? I hope the motor will directly bolt in at least I’m hoping anyway. Please help I’m no gm technician
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By Grumpy Bear · Posted
Lauren Fix (aka “The Car Coach”) is an American automotive expert, racing driver, journalist, and TV/media personality. She’s known for car-buying/maintenance advice and has appeared across major news and entertainment outlets, plus authored multiple books on cars. Wikipedia1
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