Hello there!  My name is Jason and I run this little site.  If you would like to contact me for any reason, please feel free to write me at [email protected]  I’m a pretty busy guy, but I check that inbox every day in the evening.



26 thoughts on “Contact”

  1. Good morning!
    I am an owner of one CHevy C10 Truck With ab 6.2Ltr. Diesel
    and it is a Th700R4 into it.
    My plan is to install one GM 350 engine into the truck.
    Can I use the same transmission on that gasoline engine.
    The indification no. is : 91J117D I do not understand that code, only the year. 1982-1985 ?
    In advance thank you for Your replay.


    • John, It will certainly work. There will be a few issues though. The first is that a diesel engine shifts way before a gas engine ever will. So when you put a 350 in there the transmission will shift super early. You’ll have to get a shift kit to change the shift points to match your new motor. Also, the converter won’t work properly with it either. Just order the one for your vehicle with the 350/305 application. Here is some further reading. Good luck!

    • My i10 ABS light has come on and shortly after I start driving my hand brake light comes on and stays on until I stop and turn off the engine the Abs is on right from the start and won’t go out. Although the brakes are working perfect and I have even tried braking and steering no problem there either I was wondering if the Monsoon that hit us last week has anything to do with this. The handbrake is also working perfectly.

  2. those rpo codes you mention about the 4t65e-hd, mn7 is also the same code for many buick park avenues,only the ones that are supercharged, I drive an 02, and currently searching for one for my 03, just sharing additional information which is true and correct

    • Thank you, Jason. I’m fixing it right now. If you have a sight you’d like me to link to I’ll throw it on there and give you credit for improving the site. Thanks again!

  3. Hey jason, i read that p0420 on a cruze is most likely the upstream sensor problem, how likely will the check engine go away if i change the sensor would you say around 80%.

  4. Hey, I just wanted to point out something that was said regarding the casing of the 4l60e vs 4l65e. In one article you state both transmissions mount to crossmember in the same location but this would actually not be true if you were comparing an earlier LT1 style 4l60e to a 4l65e. I assume the LS 60e and 65e have the same crossmember mount point, but I recently swapped an Lt1 casing for an LS casing 60e and the trans mount on the LS 60e was located a few inches further forward than the LT requiring some significant crossmember modifications to my tubular crossmember. I’m actually trying to figure out now if there was any height difference in the mounting pad location but I suspect the LS’s mounting pad is shorter as the motor seems to now sit back at a steeper angle while using the same poly mount.

    Just figured it was worth noted because prior to bolting up the LS transmission and realizing the issue I never read anyone mention on the net that there would be a significant difference in trans mount locations between the LT1 and LS1 60e. May help someone else who decided to ditch their LT1 60e for an LS1 60e or 65e on their LS swap.

  5. I was just checking out the transmission rpo code page, I was looking for M32. M32 is, as you say on your page, the code for an Izusu 5 speed manual trans BUT as it turns out, M32 is also the code for the 4L65E transmission. The 4L65E I speak of is installed in a 2006 Yukon Denali and the rpo code matches with that. Maybe it has to do with the year of manufacture I don’t know.

  6. I build 4L60E’s for my living. I have been building transmissions since 1979. I have been part of the 700R4 evolution since it’s inception in 1982. Please see the 4L60E Wikipedia page for official references.
    The 4L60E RPO M30 came out in 1993. 1993-1994 are interchangeable. the 1995 is a stand alone year 1996-1997 full sized truck are the same or interchangeable. The 4L60E was changed for 1996 (Still RPO M30) to feature a 2 piece case (detachable bell-housing) in the S-T trucks. For 1998 the full size trucks were given the 2 Piece design. In 1996 the LT/LS was born and in 1999 the 4L60E (still RPO M30) came with the 300mm design in-put shaft to handle the extra HP ratings. Around 2001 the 6.0L engine was used in the Yukon/Suburban. GM felt the M30 4L60E would not hold up to the extra torque/HP and designed the 4L65E (RPO M32) for those specific applications. The M32 or 4L65E was updated to include a 5 pinion front and rear planetary set and 7 friction 3-4 clutch set. for those applications. Also around those times GM stopped putting the M30 casting # to the main body of the transmissions. That made it very difficult to tell them apart. The white tag that comes on the transmission main case is the only way to tell them apart. the 4L65E was given a Z in the 4digit tag code. first digit is the year model, second is the drive 2wd or 4wd and the third is the engine code. IE 2CHD = 2002 2wd 5.3L. 4KZD = 2004 4×4 6.0L. There is a few pages of transmission code information out there for the 700R4/4L60/4L60E/4L65E/4L70E.

  7. Jason,
    I got you email from the internet site. I have a few questions about my 2013 Jeep Grand Cherokee with a Diag code of P0741.
    3.6 Engine
    W5A580 Mercedes Transmission with only 78K miles.
    1. I was told by a transmission shop who did a diagnostic check for free that I will need him to tear apart the transmission to diagnose and fix the issue ($3000-4500)
    2. I was also told by another transmission shop over the phone (without doing any diagnostics) that i needed a new re-built transmission. ($4000)

    I am thinking about taking to the Dealer for them to diagnose to see what they say?

    I find that hard to believe I already need a new Transmission? What would you do? Change the fluid and filter? The Manufacturer (Jeep) does not recommend until 120k, but Mercedes told me today the change is due now?
    In your experience do you think I may need a new Transmission?
    Thanks very much in advance

    • Fran,

      So did transmission shop 1 tell you what they came up with in their free diagnosis? It’s tough to say. That’s certainly not a lot of mileage. I’d be wary too. As crazy as it sounds, I’d want to hear what the dealer has to say. Let me know what they say. Good luck!

  8. There diagnosis was that the clutch was slipping and they needed to tear it down to inspect everything? They did not tell me anything else? I see that it could be related to a few other less expensive fixes.

  9. Just wanted to say thank you. I was trying to help my cousin with his Monte Carlo. Looked up the code and found your site. Very helpful and much appreciated.

  10. The defective o2 sensor causes more problem than the problem you named. For me, due to the problem with o2 sensor, firstly, it emits black smoke and soothes. The rpm is very low, which causes the car to lose its pickup. More importantly, the breaking system becomes very hard due to low Rpm. Most of the time, in low gear, the break doesn’t work.
    My car is almost new, but the service center cannot solve my problem.

  11. Just fixed a 2015 kia forte gdi that had rough idle and poor low end performance and it was the coil pack on #3. Just fyi for your database. Plugs were also pretty rough for 80K miles.

  12. My daughter & family had another fix from reduced engine power on their 2019 Chevy Equinox that I was just advised over the phone. I don’t have details yet but apparently some hose (air intake?) popped off and was sticking up. Chevy dealer said they had seen it before. Put it back on and all was well, no charge. I suspect you know better what it was. I won’t know until they get back in a week or so from their trip. I’ll double check to see that it is properly attached, whatever it was.

  13. I saw your article on the “Best TH350-400 Shifter” and you didn’t mention the Gennie Shifter. Would you consider trying one and giving a review. We get tons of great feedback from customers and think you’d really like it. All of our parts are made here in Colorado and are high quality. We make kits to fit other transmissions as well. We are family owned and would appreciate any help getting more business.

    Thanks in advance for your help,
    Nick Peterson – Owner
    Gennie Shifter


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