..

All transmissions up shift back to the highest gear
selected at highway speeds that I know of. I would think
the computer or throttle position sensor are bad. Many
new vehicles don’t have throttle linkage or cable these
days. They, like my 2008 Camry have an electric motor
that operate the throttle and I notice a delay in
throttle response in our Camry. It's the only thing I
don't like about it.

Any how IMHO if it doesn’t up shift and return to the
to the gear selected there is something wrong. I’d try
different Nissan dealer. Personally it sounds like you
bought a second hand truck with a problem and the seller
will not acknowledge that there is a problem because that
may be their financial responsibility.

I’m Sorry that I’m not familiar with the later model
transmissions.

Good Luck.. Don S..

..

I have not heard of many Nissan shift patterns
problems like yours. And yes I am familiar with the
failure of sub contracted transmission cooling cores.
Recalls and fixes for manufacturing screw-ups can
financially ruin a company. Every single company has
these problems. It is appalling that they ALL try to play
like it didn’t happen! Been there done that!!!

You might trade your truck in for a ford then park it
in the garage then two days later it catches it’s self on
fire and burns the house down. I personal know a lady it
happened to. In fact Ford put out a buliton that
stated”do not park the car in a garage".

Or closer to home we bought a new 1999 Grand Cherokee
and had to return it to the dealer 11 times for warrantee
work and the rear end was worked on 4 times they and
finally the whole thing was replaced the 5<SUP>th</SUP>
time. Our 1999 Grand Cherokee was on a tow truck hook at
2 weeks old with a bad fuel pump. The window regulators
and seat belt retractors had to be replaced. The computer
had to be reflashed. At 8000 miles the power steering
went out so we sold it off.

On the other hand Our 1999 Frontier has NEVER needed
to be worked on and this is also true of 3 Nissan Sentra
cars. My mother had a new 1986 Cadillac it was the worst
piece of junk we have ever had!

I would get 2 or 3 independent garages to verify your
transmission problems then read up on the Lemon Laws and
call the BBB.

BTW… If you could find a reputable automatic
transmission shop they might be able to find and fix the
problem economically. It could be a intermittent wire
connection. Also even though the truck was new it is
possible it was a flood victim (do a VIN # check) and
that can cause numerous problems…

Mercy and Good Luck.. Don S..