Jump to content

Electrical Gremlin

RandallPink

Recommended Posts

RandallPink Enthusiast

RandallPink

Posted
Posted

2007 suburban k2500. 6.0/4l80e. I have a click when cranked situation no start. Also, power locks cycle every time it’s cranked. If you hold the key in the crank position it’ll click every few seconds. With the key in the on position I’ve had multiple windows roll themselves down, locks cycle, all kinds of dash lights. So far I have replaced the battery, the starter, main power wire from fuse block to battery, starter power wire to battery, I’ve cut the end off the alternator power to battery cable and terminated all these wires with a different style battery clamp. I am bypassing the 175 amp megafuse. All 2 gauge wire. To my knowledge the oem battery cables are shit so I opted to make my own. On the ground side I’ve replaced the chassis ground to battery wire, the engine to battery ground wire, and I’ve added an engine to body ground wire to rule out the. Braided ground strap on the back of the drivers side cylinder head. No blown fuses, I’ve switched the starter relay with another of the same size, and nothing has changed this trucks condition. I’ve tried tilting the steering wheel to see if that would let the truck start and it didn’t. I’m waiting on an ignition switch to come to oreillys this evening. I’m completely lost. I removed the under hood fuse block and inspected it and didn’t see any corrosion on any connectors. I’ve heard there’s some intergrated relay in the fuse block that could be the issue but I have no idea. I just bought this truck knowing it needed a battery and brakes, drove it off a trailer and parked it and went to move it 3 days ago and got this by surprise.

Formulabruce Enthusiast

Formulabruce

Posted
Posted

Clean the BCM ground wires at cab mount below DS door, on the frame. Rear side of cab mount sticking off the frame.

RandallPink Enthusiast

RandallPink

Posted
  • Author
Posted
27 minutes ago, Formulabruce said:

Clean the BCM ground wires at cab mount below DS door, on the frame. Rear side of cab mount sticking off the frame.

So even on the suburban this ground location is under the drivers front door?

RandallPink Enthusiast

RandallPink

Posted
  • Author
Posted

I’ve tried testing with a multimeter and My battery’s got 12.56 volts, all the battery leads I’ve replaced carry the same current, and even the ground connection I just cleaned is carrying the same current. 

RandallPink Enthusiast

RandallPink

Posted
  • Author
Posted

I’ve now attempted to jump the starter solenoid, I rigged the key up to be in the start position, got out of the vehicle, then bridged across the two terminals on the starter with a screwdriver and it arced and I couldn’t tell if it either groaned trying to start or didn’t engage with the flywheel, but still no start. 

RandallPink Enthusiast

RandallPink

Posted
  • Author
Posted
16 minutes ago, C/K Man said:

Battery cables good?

I made my own out of 2 gauge wire. And I’ve put a multimeter on the negative side of the battery and poked every wire on both ends with the positive side and got the same voltage that the battery has, and did the same vice versa for the negative cables. 

RandallPink Enthusiast

RandallPink

Posted
  • Author
Posted
32 minutes ago, Racindave said:

Have u tried a different battery? 

Bought the truck with a shit battery, bought a new Napa battery. This Napa battery is what I’ve been using 

Racindave Enthusiast

Racindave

Posted
Posted

 

7 minutes ago, RandallPink said:

Bought the truck with a shit battery, bought a new Napa battery. This Napa battery is what I’ve been using 

I got u just Wonder if the new one is  bad...

RandallPink Enthusiast

RandallPink

Posted
  • Author
Posted
8 minutes ago, Racindave said:

 

I got u just Wonder if the new one is  bad...

Very well could be an issue. But the thing is is the truck started ran and drove with a jump with the original shit battery in it when I drove it off the trailer and parked it

Formulabruce Enthusiast

Formulabruce

Posted
Posted

check for any codes? This may need a tech 2 at the dealer, especially if the ecm got a lil fried

RandallPink Enthusiast

RandallPink

Posted
  • Author
Posted
24 minutes ago, Formulabruce said:

check for any codes? This may need a tech 2 at the dealer, especially if the ecm got a lil fried

I haven’t checked for codes, and I’m doing my best not to have a dealer look at this thing lol. My wallet has already suffered. 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • newdude
      2 speed transfer case optional now?

      By newdude · Posted

      This is a 1/2 ton thing ONLY.  All HDs 2020-2026 have the two speed transfer case, with Autotrac as an option.     1/2 tons 2019-2026, regular 4x4s come with a single speed case (no 4LO!), and trucks with Z71 ordered, or all Trail Boss trucks come with the 2 speed case.  2 speed case is also an option on WT, and is also standard on High Country.  
    • newdude
      Different requirements for oil filters?

      By newdude · Posted

      2013 5.3 still to this day calls for the PF48 filter.  Which as a 15psi bypass pressure.     There is a TSB, 17-NA-157 that talks about the PF-63 and PF-64 filters which have a higher bypass rating of 22psi.    TSB HERE - temp.xml   "Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions.  Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters"   It also calls out what engines use those filters.  The gen 4 small blocks were not on that list (LMG, LC9, L9H, L92, L94, L20, L96).  Gen 5 small blocks use the higher pressure filter.          That all said...   Your 7045 Napa filter is the PF63 equivalent, with 22psi bypass.  You are already using the higher bypass pressure filter.  You CAN keep using it, you don't technically have to use it though.  
    • Grumpy Bear
      Different requirements for oil filters?

      By Grumpy Bear · Posted

      Do you know WHY the filter relief setting was increased to 22 psig?    When the new system goes into the second stage the pump volume ramps up considerably. It was found that the 15 psi filter bypass setting put the filter in bypass on a warm engine when the second stage was activated. Raising the filter bypass setting forced the filter to do what it designed to do. Filter. Preventing debris from circulating during high load, high rpm operation.    So next question is how did GM find this out? VLOM/lifter failures and a deep dive by Melling Corp.    Last question. Is it required? Look at it like this; a motor may be equipped with a rev limiter. But it only works if the set point in reached. That 22 psig setting only matters if the pressure differential across the filter media exceeds 15 psig during normal warm operation. Second stage kicks in around 3000-3500 rpm.    I can't answer your question because I don't know you and how you use the truck. But I think there is enough information here to let you decide for yourself. 😉
    • Coastie05
      give me some tips to make my truck look better

      By Coastie05 · Posted

      Go back to OEM wheels. 
    • newdude
      2020 Trailboss 6.2 replacement

      By newdude · Posted

      Probably not their first rodeo, so it should go as planned most likely.  Typically the service manager or tech doing the swap will put some seat time to shake it down after they get it all put back together.  We usually put 50-100mi before we hand them back so if something happens, its not after you get it.  A coolant leaks, oil leaks, a ground left off or loose, vibration, etc.     The new engines so far have been good?  There's been a couple that have popped out there again (the replacement engine) but most have been okay.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...