I have reverse but no forward gears. Is it more electrical than mechanical? Trans fluid getting Hot. Also threw codes P0712, P0731, P0732, P0733
SOURCE: 97 gmc pickup with automatic transmission trouble
1st thing to do is test the system for codes, the problem is most likely a failed or stuck shift solenoid indside the trans, have you ever serviced the trans, sometimes a fluid and filter cahnge will cure these kinds of issues.
SOURCE: no reverse after rebuild on 4L60E Transmission from 1995 GMC Sono
There isn't a modulator on this trans as it is electronic
You can have first gear going forwrd but no reverse. It is possible. The low/ reverse clutch isn't needed to go forward.
SOURCE: transmission wont shift into any forward gears or
4WD! the transfer case is not stuck in neutral is it? Fluid levels are good? Have you noticed a decrease in mileage or power prior to this problem? If no then time to take it in for service it sounds like. Transmission fluid is not consummed, so if it leaked out then you may be able to fill it up and get the leak fixed, if too late then its a rebuild on the tranny.
SOURCE: Transmission Fluid Capacity?
I will assume you have already drained the trany. You could have measure the fuid out and replaced all but a quart. Estimate what you took out minus a quart and run the trany through all the gears. let is set and measure what you need. Even simpler, get the manual for the unit and look up maintenace.
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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