Question about 1999 Pontiac Grand Prix

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Transmisson 1999 grand prix trans will not go in drive or 3rd but will go in 2nd and 1st but i can un plug the soiliond sensor and it will go in drive and 3rd but it seems like its in a higher gear pulling out when u come too a stop u have too pull it down in 1st already changed the soilionds in the trans full on fulid what eles could it be any ideas

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You will have to get hooked up to a scanner,trouble code is present causing trans. to go into safe mode.

Posted on Jan 18, 2009

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Technical service bulletin 10451985


Do you have any codes? What color is the trans. fluid? Do you have enough fluid?

Jul 25, 2014 | 2008 Pontiac Grand Prix

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General Motors gear ratios hide] 1 GM Rear Wheel Drive...


General Motors gear ratios
hide]

GM Rear Wheel Drive Transmissions

PTU = Power Transfer Unit (Crossover SUV AWD/4WD)

6 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd
MNK Allison 1000
MNZ Allison 1000
MW7 Allison 1000
MYB
MYC

5 Speed Automatic Transmissions

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*

4 Speed Automatic Transmissions

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
  • EVT Mode 1 The 2ML70 can operate in electric mode or non-electric mode in first gear with a gear ratio of infinity to 1.70:1.
  • EVT Mode 2 The 2ML70 operates in non-electric mode with a gear ratio of 1.70 - 0.738:1

3 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd
M40
M41
M65
MD2
MD3 HM-180
HM-200C
HM-350
HM-400

GM Front Wheel Drive Transaxles

6 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd
MH2
MH4
MH6 6T75 (AWD)
MH7
MH8
MY9 6T75 (AWD)

5 Speed Automatic Transaxles

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

4 Speed Automatic Transaxles

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

3 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd
M60 GEO Metro
MB3 A131L
MD9
MX1 A131L
GEO Storm
HM-425

GM Manual Transmissions

6 Speed Manual Transmissions

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

5 Speed Manual Transmissions

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)

4 Speed Manual Transmissions

RPO Trans Name 1st 2nd 3rd
M20 HM-117
M73 Isuzu
MC0 Getrag
MC9
MY6 NP260

More GM Manual Transmissions

6 Speed Manual Transaxles

RPO Trans Name 1st 2nd 3rd
MT2 Opel F40 83mm
MU9 Opel F40 83mm
MTN Toyota C60

5 Speed Manual Transaxles

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

GM Continuously Variable Transaxles

RPO Trans Name Lowest Highest
M83 V20-E
M75 V25-E
M16 V25-E AWD

on Apr 15, 2015 | GMC Cars & Trucks

1 Answer

Ford Explorer, slips in reverse and when you put it in drive you have to rev the engine before it will engage. Once engaged it often slips in between 1st, 2nd and then smooths out after 3rd.


Pull the transmission & rebuild it

You should know when they slip
your done or the trans is

So if it had any chance to be fixed, you
ruined that by continuing to drive it

Now you can get out the check book for
about $3,000.00

Sep 04, 2013 | 2004 Pontiac Grand Prix

1 Answer

Transmisson problems


it can be the shift solenoid in the trans there is one for 1st and 2nd then there is one for 3rd and fourth easy to change drop pan they are right there.about 40 to 60 at dealer for solenoid and of course fluid and filter about 60.00

May 23, 2009 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

2007 yukon gears seems striped or transmisson prob. only 72000 mi


It is an internal trans problem. I build transmissions for a GM dealer. It is going to be the input carrier, forward sprag, and 3rd/4th clutches. I have seen several. Get it to your dealer. That truck has a 100,000 mile powertrain warranty. That includes the trans. Good Luck.

May 09, 2009 | 2007 GMC Yukon

1 Answer

1999 plymouth voyager will shift 3-4 times then gets stuck in 1st


I've had this happen before. It turned out to be the output sensor on the trans.

Apr 10, 2009 | 1999 Plymouth Grand Voyager

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