Attention: TDR Forum Junkies Hey Guys,
I'm having some transmission problems on my 2004 NV5600. The truck has about 175k miles on it. I don't tow often, but did rag on it pretty hard from time to time when ti was newer. For the past couple years, I have had issues with an occasional grind when shifting into 3rd gear. This primarily happens if I don't match the right RPMs, or if I try to shift too quickly. I assume that it's a worn synchronizer.
The last few times I've driven the truck, I have a new problem. Both times I did it, I had driven the truck about 25 miles, and everything was up to temp. The symptom that I see is that when I try to shift, I'm not able to. The first time it happened, I had shifted out of third gear, and was going for fourth and it the gear shift physically wouldn't go into fourth. I tried to go to fifth instead, and then down to third, with no luck. The only place the shifter would move is back and forth in neutral. Something was completely restricting me from going into any gear. A couple minutes after I pulled over, I was finally able to get it into third, so I drove the final two miles home in that gear. When I got home, I was able to go into any gear without any problems.
I drove the truck again a few days later. I drove 30 miles to work, and didn't have any problems. On the way home, however, I ran into a similar problem after driving about 25 miles. This time, I was going up a hill and needed to downshift because it was steep and I was coming into a corner. I shifted out of sixth, into fifth. As I continued to slow, I needed to go to fourth. When I pressed the clutch, the gear shift wouldn't come out of fifth gear. The clutch did disengage the transmission, but the shifter just wouldn't come out. I let the clutch back out and lugged it up the hill in fifth gear. At the top of the hill, I got back up to a comfortable speed for 5th gear, and tried to shift out of 5th again. The gear shift felt immobile. Even if I left the clutch in, and matched the RPMs so there is no pressure on the transmission, it wouldn't come out of gear, clutch in or not.
Again, I drove home, and once there I was able to use any gear.
At this point, it sounds like it isn't a clutch issue because even with the clutch engaged, I should have been able to easily shift out of 5th gear when I had the RPMs matched.
So, reviewing the symptoms that I'm seeing, do you transmission gurus have any idea what I'm looking at as far as a repair? I have one of the SBC dual disc clutches and the upgraded hydraulics, and a one piece aluminum driveshaft. The transmission has AMSOIL in it with less than 15k miles on the fluid change. I haven't heard any abnormal noises, clunking, etc from the transmission.
Thanks in advance for any insight you guys can offer!
Patriot_RAM
I'm having some transmission problems on my 2004 NV5600. The truck has about 175k miles on it. I don't tow often, but did rag on it pretty hard from time to time when ti was newer. For the past couple years, I have had issues with an occasional grind when shifting into 3rd gear. This primarily happens if I don't match the right RPMs, or if I try to shift too quickly. I assume that it's a worn synchronizer.
The last few times I've driven the truck, I have a new problem. Both times I did it, I had driven the truck about 25 miles, and everything was up to temp. The symptom that I see is that when I try to shift, I'm not able to. The first time it happened, I had shifted out of third gear, and was going for fourth and it the gear shift physically wouldn't go into fourth. I tried to go to fifth instead, and then down to third, with no luck. The only place the shifter would move is back and forth in neutral. Something was completely restricting me from going into any gear. A couple minutes after I pulled over, I was finally able to get it into third, so I drove the final two miles home in that gear. When I got home, I was able to go into any gear without any problems.
I drove the truck again a few days later. I drove 30 miles to work, and didn't have any problems. On the way home, however, I ran into a similar problem after driving about 25 miles. This time, I was going up a hill and needed to downshift because it was steep and I was coming into a corner. I shifted out of sixth, into fifth. As I continued to slow, I needed to go to fourth. When I pressed the clutch, the gear shift wouldn't come out of fifth gear. The clutch did disengage the transmission, but the shifter just wouldn't come out. I let the clutch back out and lugged it up the hill in fifth gear. At the top of the hill, I got back up to a comfortable speed for 5th gear, and tried to shift out of 5th again. The gear shift felt immobile. Even if I left the clutch in, and matched the RPMs so there is no pressure on the transmission, it wouldn't come out of gear, clutch in or not.
Again, I drove home, and once there I was able to use any gear.
At this point, it sounds like it isn't a clutch issue because even with the clutch engaged, I should have been able to easily shift out of 5th gear when I had the RPMs matched.
So, reviewing the symptoms that I'm seeing, do you transmission gurus have any idea what I'm looking at as far as a repair? I have one of the SBC dual disc clutches and the upgraded hydraulics, and a one piece aluminum driveshaft. The transmission has AMSOIL in it with less than 15k miles on the fluid change. I haven't heard any abnormal noises, clunking, etc from the transmission.
Thanks in advance for any insight you guys can offer!
Patriot_RAM
