issue Transmissions Issues/Problems

8.1HD/ALLISON · May 21, 2014

Depending on how many miles and warm up cycles your truck has, it may still be learning to your driving habits. Everything is electronic these days. Try a different dealer if your not happy with the service.

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Crf450r420 · May 23, 2014

At dealer and GM has heard us. New bulletin #PIP5175B. Slip or side during a launch in first, second, third, or fourth gears. Delayed engagement into drive, clunk or bump during the 1-2 shift. May 2 2014

All this is at temp. I don't have time to get checked today but will be back soon.

TJay74 · May 23, 2014

What is the repair procedure for it?

pretindica · May 23, 2014

At dealer and GM has heard us. New bulletin #PIP5175B. Slip or side during a launch in first, second, third, or fourth gears. Delayed engagement into drive, clunk or bump during the 1-2 shift. May 2 2014

All this is at temp. I don't have time to get checked today but will be back soon.

Please let us know what they have decided as a repair option. I was about to schedule a service again.

Crf450r420 · May 24, 2014

They have to take the front cover off and look for gasket alignment, test parts with air pressure, and check for loose bolts on assembly. The guy told me it would take a day, maybe two to check everything.

I was on my phone at the dealer for the original post.

scott19677 · May 27, 2014

GM doesn't need to produce a quality vehicle as long as consumers keep buying.

Yeah I realize this after buying TWO of these turds. Both had the same problems as yours.

SSLoki · May 27, 2014

I am now taking my truck in for the same gear related issues. I just got it out for the seat movement. Only thing good about that is they want to give me a 1 year free OnStar for my troubles. Lets see what the Tech says about the transmission. I am printing out a few of these post to let them know I am not the only one with this problem.

SSLoki · May 28, 2014

I am now taking my truck in for the same gear related issues. I just got it out for the seat movement. Only thing good about that is they want to give me a 1 year free OnStar for my troubles. Lets see what the Tech says about the transmission. I am printing out a few of these post to let them know I am not the only one with this problem.

I just heard back from another dealer and lucky me it is just a plug wire gone bad. You would think that supposed new parts would last longer than 7 months.

sinnerz · June 17, 2014

They have to take the front cover off and look for gasket alignment, test parts with air pressure, and check for loose bolts on assembly. The guy told me it would take a day, maybe two to check everything.

I was on my phone at the dealer for the original post.

Do you happen to have a link to this bulletin? I need something to from GM to prove to my dealer there is an issue, I continue to get blown off and they are saying no other 14' drivers are seeing any issues with the trans.

Crf450r420 · June 17, 2014

Do you happen to have a link to this bulletin? I need something to from GM to prove to my dealer there is an issue, I continue to get blown off and they are saying no other 14' drivers are seeing any issues with the trans.

Here is a picture of the one my dealer printed out for me.

sinnerz · June 17, 2014

Here is a picture of the one my dealer printed out for me.

Thanks Shawn, you rock!

TigerTW0014 · June 25, 2014

I have 2,200 miles and twice now after going down a fairly long hill at about 25 mph I take my foot off the brake at the bottom and press the gas pedal only to find the engine rpm's go up but truck acts like its in neutral. Same hill both times and I have to pull off the side of the road. The first time I put it in park and it drove off like nothing ever happens. The second time I pulled over and after I came to a stop I pressed the gas and it did find a gear without putting it in park. 2014 GMC sierra 1500 SLT 6.2 with 3.42 gears.

Anyone else having this problem besides me and Charliepotato? I have just over 3,000 miles and I drive the same hill everyday after work, it's not real long but fairly steep at the top. On occasion when I go from the brake (making the turn onto the hill), to the gas (midway down the hill) I find the truck in neutral. Increasing the amount of throttle just sends the revs up, still with no pull from a gear. On one occasion I actually continued applying the throttle until I was over 5000 RPM and it did actually grab a gear, not real smoothly but it slowed the truck to rev match on it's own without slamming me in a gear to harshly.

Typical run is 3000 RMP rev when I realize I have no pull, coast it out to the bottom and it catches a gear like nothing ever happened.

pretindica · June 26, 2014

Anyone else having this problem besides me and Charliepotato? I have just over 3,000 miles and I drive the same hill everyday after work, it's not real long but fairly steep at the top. On occasion when I go from the brake (making the turn onto the hill), to the gas (midway down the hill) I find the truck in neutral. Increasing the amount of throttle just sends the revs up, still with no pull from a gear. On one occasion I actually continued applying the throttle until I was over 5000 RPM and it did actually grab a gear, not real smoothly but it slowed the truck to rev match on it's own without slamming me in a gear to harshly.

Typical run is 3000 RMP rev when I realize I have no pull, coast it out to the bottom and it catches a gear like nothing ever happened.

I live in an area without any hills at all, and sometimes when I am at a green turn arrow and I make the turn and let off the gas in the turn and then reapply that will happen to me. It revs real high then catches a gear. I took my truck in twice explaining that issue and the issue of the hard jerk into second gear as well. They will not fix it, this las time i went they simply stated they took the car for 20 miles( on my gas at that) and could not reproduce the proplem. It seems to me the only way some of us are going to get a fix is if they do a recall on the transmissions. Good luck with getting your repair.

SSLoki · June 27, 2014

I live in an area without any hills at all, and sometimes when I am at a green turn arrow and I make the turn and let off the gas in the turn and then reapply that will happen to me. It revs real high then catches a gear. I took my truck in twice explaining that issue and the issue of the hard jerk into second gear as well. They will not fix it, this las time i went they simply stated they took the car for 20 miles( on my gas at that) and could not reproduce the proplem. It seems to me the only way some of us are going to get a fix is if they do a recall on the transmissions. Good luck with getting your repair.

Take it in and have them take a look at your plug wires. Especially the #4 wire, this one seems to be the problem.