This was rebuilt by a dependable trans. shop. Its shifting hard 1st-2nd and slipping 3-4. If tow haul is engaged the shift from 1-2 is really delayed but 3-4 seems great. If I take off hard and keep pushing it thru all shifts it seems to shift fine. I had a dealership test the computer and it checked out fine. If it was solenoid or valve body issues wouldn't the truck be throwing some codes out.
I think the people that rebuilt it, will have to pull it back out
SOURCE: 1st and 2nd shift error on code reader in trans
Shift error codes are enabled not only if the solonoids are faulty, does your scanner show you the solonoids switching? you could have a wiring fault. It could also be the pcm not allowing the solonoids to activate. These complicated systems are very difficult to diagnose for us profesionals with all the scanners and machines we have. Find a transmission shop in your area with a system to drive the vehicle bypassing the computor system, this will determine electrical or internal trans failure. But before you do anything check your conections from the transmission to the pcm. Also all the engine conectors and earth straps.
SOURCE: Have 03 silverado V6 1500 50k miles no shift 2-3
Unless there's other circumstances the shop should have checked the codes first. From there they should have followed a basic diagnostic route such as making sure it has fluid pressure in all valve shift circuits and the correct pressure. But, it's most likely that you need a trans and a long test drive after doing the valves would have gave them a clear direction to go in if the problem is not interrmitant,
SOURCE: 1997 Chevy 1500 P/U 4x4 small V8. Transmission shifting issue.
you may be confusing the torque converter clutch engagement with o.d. this trans has a problem with the T.C.C. regulator valve wearing out the valve body bore. this will cause the converter clutch to engage only sometimes or not at all. this will set a P1870 code in the control module. when this code is stored in the controller, ( check engine light may or may not be on), it increases the pressure in the transmission causing the 1-2 shift to be harsh. ask a local tranny shop to scan the vehicle ( most will do this for free) if this is the problem they can either fix your valve body (sonnax parts) or replace it with an upgraded valve body. hope this helps
SOURCE: 1995 Chevy S10. The transmission (4L60E) has been
Imput drum is built incorrectly or bad imput drum. trans assembled correctly, put on trans x and if trans does not operate correctly I will ship you one for $1000 www.TransmissionGarage.com
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| MNK | Allison 1000 | |||
| MNZ | Allison 1000 | |||
| MW7 | Allison 1000 | |||
| MYB | ||||
| MYC |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| M74 | Allison 1000 | |||
| M22 | 5L50-E | |||
| M82 | 5L40-E | |||
| MTW | Allison 2400 | |||
| MX4 | Allison 2000 | |||
| MX5 | 5L40-E with PTU* | |||
| MV3 | 5L50-E with PTU* |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| M30 | 4L60-E | |||
| M32 | 4L60-E HD | |||
| M32 | 4L65-E | |||
| M33 | 4L60-E Hybrid | |||
| M41 | 4L30-E | |||
| M70 | 4L70-E Super Duty | |||
| M99 | 2ML70 2-mode Hybrid* | |||
| MD8 | ||||
| ML4 | 4L30-E | |||
| MN8 | 4L80-E HD | |||
| MN8 | 4L85-E | |||
| MT1 | 4L80-E | |||
| MW9 | HM 200-4R |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| M40 | ||||
| M41 | ||||
| M65 | ||||
| MD2 | ||||
| MD3 | HM-180 | |||
| HM-200C | ||||
| HM-350 | ||||
| HM-400 |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| MH2 | ||||
| MH4 | ||||
| MH6 | 6T75 (AWD) | |||
| MH7 | ||||
| MH8 | ||||
| MY9 | 6T75 (AWD) |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| Aisin-AW 55-51LE | ||||
| M09 | Aisin-AW AF33-5 | |||
| M43 | Aisin-AW AF23-5 | |||
| M45 | Aisin-AW AF33-5 | |||
| M98 | AF33-5 | |||
| MJ7 | Honda 5AT | |||
| MJ8 | Honda 5AT w/PTU* | |||
| MLS | Aisin 50-40E | |||
| MU3 | Saab 76.5mm |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| MLQ | Aisin 81-40LE | |||
| Aisin ZF 4HP 16 | ||||
| HM 325-4L | ||||
| Jatco JF405-E | ||||
| M10 | Jatco JF403-E | |||
| M13 | 4T60-E HD | |||
| M13 | 4T60-E | |||
| M15 | 4T65E | |||
| M45 | Aisin-AW AF33 | |||
| M57 | A245-E | |||
| M76 | 4T65E with PTU* | |||
| MD7 | 4T65E | |||
| ME7 | 4T45-E BAS Hybrid | |||
| ME8 | ||||
| ME9 | ||||
| MH1 | 4T80-E | |||
| MN3 | 4T65E | |||
| MN4 | 4T40/45-E | |||
| MN5 | 4T45-E | |||
| MN7 | 4T65E HD | |||
| MS7 | A240-E | |||
| MU4 | A246-E | |||
| MU5 | U341-F |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| M60 | GEO Metro | |||
| MB3 | A131L | |||
| MD9 | ||||
| MX1 | A131L | |||
| GEO Storm | ||||
| HM-425 |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| M10 | Tremec 85mm | |||
| M12 | Tremec T56 | |||
| ML6 | ZF S6-650 | |||
| ML9 | ZF S6-40 | |||
| MM6 | Tremec T56 | |||
| MV1 | Aisin 85mm | |||
| MV5 | Aisin D173 AY6 | |||
| MV6 | Aisin 85mm | |||
| MZ6 | Tremec 85mm |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| M35 | Getrag 260 | |||
| M35 | Getrag 260 (2003-2004 Cadillac CTS) | |||
| M49 | BW 5spd | |||
| M50 | ||||
| M59 | GEO Tracker | |||
| M86 | Getrag F23 75mm | |||
| M94 | Getrag F23 | |||
| M96 | Tremec 109mm | |||
| MA5 | Aisin AR5 82mm | |||
| MG3 | Getrag F23 | |||
| MG5 | ||||
| M50 | ||||
| M51 | ||||
| MH3 | Tremec T-5 | |||
| MK5 | C59 | |||
| ML2 | Tremec T-5 | |||
| ML3 | Tremec T-5 | |||
| MT8 | ||||
| MU3 | Saab F25 | |||
| MW2 | ||||
| MW3 | NV4500 109mm | |||
| TR-3450 | ||||
| TR-4050 | ||||
| TR-4050 | ||||
| 2007 Chevrolet Optra and Spark (Trans code Y4A) | ||||
| 2007 Chevrolet Optra and Spark (Trans code Y4M) |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| M20 | HM-117 | |||
| M73 | Isuzu | |||
| MC0 | Getrag | |||
| MC9 | ||||
| MY6 | NP260 |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| MT2 | Opel F40 83mm | |||
| MU9 | Opel F40 83mm | |||
| MTN | Toyota C60 |
| RPO | Trans Name | 1st | 2nd | 3rd |
|---|---|---|---|---|
| D-16 (2005-2008 Chevrolet Aveo 1.4 DOHC / 1.5L) | ||||
| D-16 (2005-2008 Chevrolet Aveo 1.4 SOHC) | ||||
| Y4A (2007 Pontiac Matiz) | ||||
| YM4 (2005-2007 Chevrolet Aveo) | ||||
| D-20 (2005-2007 Chevrolet Epica) | ||||
| L73 | Pontiac LeMans F16 | |||
| M42 | Geo Metro | |||
| M43 | AF23 | |||
| M49 | BW 5spd | |||
| M58 | Geo Metro | |||
| M79 | LeMans F13 | |||
| M86 | Getrag F23 (5T45MI) | |||
| M94 | Getrag F23 | |||
| M98 | Aisin 55-51E | |||
| MB4 | Geo Prizm 1.8L | |||
| MB5 | Geo Prizm | |||
| MFB | 2008 Chevrolet Epica 5-Speed S/R (D24) | |||
| MFN | 2008 Chevrolet Epica 5-Speed S/R (D33) | |||
| MG1 | HM-282 | |||
| MG2 | HM-282 | |||
| MG3 | Getrag F23 | |||
| MJ1 | Isuzu | |||
| MK7 | Isuzu | |||
| MLM | Y4M (2008 Chevrolet Aveo 1.6 DOHC) | |||
| MR3 | Isuzu | |||
| MU3 | Saab F25 | |||
| MV2 | Chevrolet Sprint | |||
| MY7 | Early J-car |
| RPO | Trans Name | Lowest | Highest |
|---|---|---|---|
| M83 | V20-E | ||
| M75 | V25-E | ||
| M16 | V25-E AWD |
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