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Camouflage [emoji38] Sent from my iPhone using Tapatalk

No sway was running about 60-65 on I95. Trailer towed straight, no hopping, only issue was with trucks. Sent from my iPhone using Tapatalk

Trailer was fine but right at weight limit and size limit. Uhaul won’t rent to you if they know it’s for a Humvee. Sent from my iPhone using Tapatalk

This is what I’ve used and worked good. Sent from my iPhone using Tapatalk

Good day. The units I tested with the new blue EPROMs worked great. I’ve put them in 3 Humvee’s and all are working great. I’ll look for the pics and attach in next message. Sent from my iPhone using Tapatalk

Looking for a good clean wiring schematic for M925A2, helping out viet nam vet with electrical issues. Thanks

I trying to find a good clear wiring schematic for a M35, trying to help out some Viet nam vets with electrical issues. Thanks

Any part numbers on fan clutch ? Were you able to reuse your original fan ? Thanks

Great thanks, thought I was on low side. Rick Sent from my iPhone using Tapatalk

Anyone install a boost gauge to see what their boost is ? If so what did you get ?psi. I installed boost and fuel pressure gauges and looking to compare readings. At 2500 rpm and 60 mph i see +/- 5 psi boost and +/- 10 psi fuel pressure. Thanks Sent from my iPhone using Tapatalk

Good day, Couple questions: First question : I’m trying to understand the Engine Speed Sensor, looking at the trouble shooting guide in ™ …387-24-1 section 2 pg 402 it says .3 volts min at idle but it doesn’t say a/c or d/c. I see it marked as a/c in the 4L80 supplement,,, so should I read A/C...

Thanks, yes I have that manual. Trans light comes on when run switch is turned on and goes out when engine starts. I’ll check for codes to be sure. Thanks Sent from my iPhone using Tapatalk

Yes trans light works. What should I check to see if TC is working correctly ? I’ll go back in manuals and try to find an answer. Thanks Sent from my iPhone using Tapatalk

What should be normal operating temperature of a 4l80e transmission ? I went for a 10-15 min drive and crawled under Humvee after and transmission pan was very hot, I’ll try again tomorrow and get some temperature numbers with my temp gun. Thanks Sent from my iPhone using Tapatalk

Thanks, I’ve found 2 compatible GM TCM’s used and ordered the blue chips so I’ll find out, hate to pay $650 up for a spare. I’m really just trying to learn more and investing $200 is worth it to me. Thanks everyone. Rick Sent from my iPhone using Tapatalk

Yes the new TCM’s are pricy $650 up. I’m going to try getting an old civi TCM with an eprom to just try ($250 +/-) if it works I’ll keep for a spare, if not … well I learned something Thanks Sent from my iPhone using Tapatalk

Thank you that helps me understand them better, I was confused by the dates on the chips. So a 1999 turbo chip is good for 2006 turbo but not for a 2006 non turbo and the newer TCM’s don’t have chips. Again thanks Sent from my iPhone using Tapatalk

Are all the eprom’s compatible in the TCM’s ? I see different years I assume different programming for shift points as trucks got heavier ? I’m just trying to learn more about the different Humvee’s. Thanks Sent from my iPhone using Tapatalk

Thank you

I’m trying to check DTC codes on my 2005 M1152 and it just respetes 12, I let it run thru 7 times and just respetes 12, is it safe to assume there are no problems with TCM ? I dont see anything in 4L80 manual or ™’s addressing this. Thanks Rick