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Steve Blair Posted on Feb 18, 2018

I have a 2005 Chevy Silverado 3500 4x4,6.6 turbo diesel 4 speed automatic transmission Allison bearly moves under heavy load's.

I was towing a very heavy 5th wheel toy hauler. As I got on the highway I pushed ******* the accelerater and BANG No power, I let off the accelerater then slowly got up to highway speed. Drove some miles and pulled off the highway, had to come to a complete stop at the end of the hwy exit. Bearly moved.. slowly crept up to speed. Without a load the truck works great, I can smoke the tires. No issues that I can tell, and no codes are coming up. What's wrong with this thing?

5 Related Answers

Anonymous

  • 6982 Answers
  • Posted on Mar 19, 2009

SOURCE: 99 Silverado 4-wheel drive not engaging

It does not seem that sufficient diagnosis was done. No, you cant give a specific diagnosis like that without tearing unit down. It's likely that they told you the most common failure and left it at that. Likely there is a problem with your unit...I think this becomes more of a trust issue than a mechanical one. A second opinion from an independent reputable shop may help but either way, you need to have it fixed. In not using it much, it makes me wonder how it got worn.
good luck

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Anonymous

  • 30 Answers
  • Posted on Jun 19, 2009

SOURCE: A low growling noise when turning left only on '04 Silverado

Intermediate shaft is the most likely cause for this and your right there have been issues.

john h

  • 29494 Answers
  • Posted on Sep 29, 2009

SOURCE: what is the towing capacity of a 2002 Chevy

the 1500 hd rated tow 10300 lb haul in bed 3129lb but the 4x4 tends to reduce tow capacity by about 200 to 400 lbs

Anonymous

  • 986 Answers
  • Posted on Nov 03, 2009

SOURCE: 2006 chevy truck 3500 hd duramax diesel with an

658 is a unknown code on the list,is your active or inactive,iif inactive I would not worry about it

Anonymous

  • 31 Answers
  • Posted on Jan 30, 2010

SOURCE: whinning/humming noise on front end

you have a wheel bearing going out. see if it gets quieter if you turn one way or the other that will tell you what side it is on

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

General Motors gear ratios
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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
0helpful
1answer

2005 Chevy Silverado 6.6 turbo diesel 3500 4x4 can't pull heavy loads

Do you hear the turbo whine/high pitched noise when it's pulling?Do you know for a fact if the turbo is working?Is fuel pressure correct? Is the exhaust system sound very quiet?If it does then it may be restricted.
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Duramax diesel w/allison trans; went into limp mode while towing 8000lbs; cooled down ran fine till it heated up again then limp mode; unhooked and drove 200 miles, ran fine; afraid to tow again help

Does the transmission have an over heat switch? That is the only thing I can think of. If so, you need to add another transmission cooler to assist the one you have for those heavy loads.
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I have a 94 chevy Silverado 5.7l with 4l60 transmission will a 97 chevy Silverado 4l60 work even if the speed sender is on different side and made different on transmission

Chevrolet / GMC / GEO Transmission Look Up Table

www.autorepairmanuals.biz/page/372807
Blazer, 1993-, 4L60-E. Blazer, 1994 - Up, 6.5L V8 Turbo Diesel, 4L80-E. BLAZER/TRAIL BLAZER/JIMMY, 1995-2003, 4 SP RWD/4X4, L4 2.2L L6 4.2L V6 4.3L ...

Transmission Applications - GM Automatic Transmissions

www.gmautomatictransmissions.com/transmission_applications.php
Avalanche, 2001-06, V8 5.3L 5.7L 6.0L, 4 Spd RWD/4X4, 4L60E. Avalanche, 2004-06... Camaro, 1994-05, V6 3.4L 3.8L, 4 Spd RWD, 4L60E. Camaro .... Monte Carlo, 1997-05, V6 3.8L (W/S.C.), 4 Spd FWD, 4T65E. Monte Carlo ... Silverado, Sierra,1500-3500, 1995-06, V8 4.8L 5.0L 5.3L, 4 Spd RWD/4X4, 4L60E. Silverado ...

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Can anyone please tell me the location of the airconditioner freon charging port on my 2005 Chevy Silverado 2500HD, Turbo Diesel w/allison trans. There isn't one on the big line from the compressor to the...

The A/C service port is on the accumulator (Filter/Seperator i think is what you called it)on your Silverado. Good luck and keep me posted. Be glad to help.
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