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  1. Medium Duty Trucks
    Hey guys I have a 06 Gmc topkick c5500 needs connector 192840781 bosch 154P-E 96 pin
  2. Any Other Vehicles
    Hi everyone, I’m new to this site and not very experienced with automotive stuff, but I was wondering if it is possible to take the alternator out of a 2001 7.3L Ford power stroke(I believe) and put it in my 2007 F150 with the 5.4L triton? Thanks
  3. Electrical
    I took this down to access some wires behind this panel. Place it back like it was before and now I get the service trailer brake system error message in the dash. Any ideas or advice on what to do/look at for corrective actions?
  4. Electrical
    I found the wiring diagram here so figured It was a good place to come and ask too! I’m working on a 2007 C4500 with the LLY. The batteries keep draining over the weekend. I tested across fuses and found voltage between the hot on the courtesy fuse and ground of the gauges fuse. There is a...
  5. GM Gassers
    What size of batts you guys using for the 2nd batt on passenger side? I have the bracket but does not look like there is enough height to put in a decent batt
  6. 6.2L Diesel Engine
    How's it goin fellas! How do I remove the top cap with wires that's connected to the glow plug controller ('82 C10 diesel). I have a tendency of breaking things so I don't want to just yank it out lol! I joined the forum just to ask this so I'm hoping someone can answer my question. Thanks In...
  7. Medium Duty Trucks
    able to keep track of bulletin 66 which now has the url of 55 (go figure) regarding the spare blue wire to 7 way connector for brake actuation: https://www.gmupfitter.com/files/media/photo/320/Bulletin_55.pdf but this bulletin doesn't recommend a spare circuit for the 30 amp load anticipated...
  8. Duramax Seventh Generation: 2020+ (L5P)
    I have a 2020 Denali L5P. Seems that there isn't much of anything that can be left ON in the truck to drain the batteries - even if you turn the truck on and don't start it - it seems to shut off in 10 mins. However, this AM both the batteries are dead. (9.2 Volts left on them). I'll...
  9. Duramax Fourth Generation: 2007.5-2010 (LMM)
    2007 (new body style) Silverado 2500 6.6L LMM 329,000 miles Original motor, original trans, EGR deleted 3 years ago, no programmer, factory tune. A couple of weeks ago the batteries went out overnight. Truck would not start and batteries would not charge. I replaced the batteries and I have had...
  10. 6.2L Diesel Engine
    Hi - I'm the proud owner of a mostly running 1987 Suburban, with 6.2 of course. This is my first GM diesel so I have a few questions to get it fully on the road. The oil pressure gauge and temp gauge don't work, so i bought new sending units. However, the wiring connectors seem different. Did I...
  11. Medium Duty Trucks
    Looking for suggestions on the best place to purchase a whole new wiring harness. 2006 C4500 6.6L with Allison 1000 transmission. Sub model is C4042E.
  12. Electrical
    I need help with the correct wiring for the windshield wiper motor on a 1994 Georgie Boy Swinger motorhome. The wiper motor is a United Technologies Electro Systems built in Columbus MS. There are 5 possible plug ins for 3 wires. The wires are colored red, green and black. The wiper...
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