Good evening,
2002 Chevy 1500 HD with a 6.0L engine. I posted about a year ago and still have not found a solution to this problem. Hopefully you can help point me in the right direction.
The only code that comes up is a 4wd low circuit code and my 4wd service light comes on periodically, but only about once every two weeks. I have found some articles stating that the 4wd low circuit is on the same circuit as the transmission going into the PCM so I don’t know if this has anything to do with it. Below is what I am experiencing.
When I crank up, I have to go through the gears manually while driving. Once you go through all gears 1 through D, and reach about 55 mph, then the gears will shift smoothly on their own from a dead stop.
If I don’t go through all gears manually first, and try to take off in D right after initial crank up, then it will shift into the next higher gear too soon and bog down. If you try to push the gas to the floor it will not downshift.
However, if I run through the gears manually first and get up to 55 mph then stop and can floor it and shifts like it should.
Any suggestions would be helpful since I have been dealing with this for over a year now.
2002 Chevy 1500 HD with a 6.0L engine. I posted about a year ago and still have not found a solution to this problem. Hopefully you can help point me in the right direction.
The only code that comes up is a 4wd low circuit code and my 4wd service light comes on periodically, but only about once every two weeks. I have found some articles stating that the 4wd low circuit is on the same circuit as the transmission going into the PCM so I don’t know if this has anything to do with it. Below is what I am experiencing.
When I crank up, I have to go through the gears manually while driving. Once you go through all gears 1 through D, and reach about 55 mph, then the gears will shift smoothly on their own from a dead stop.
If I don’t go through all gears manually first, and try to take off in D right after initial crank up, then it will shift into the next higher gear too soon and bog down. If you try to push the gas to the floor it will not downshift.
However, if I run through the gears manually first and get up to 55 mph then stop and can floor it and shifts like it should.
Any suggestions would be helpful since I have been dealing with this for over a year now.