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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

96 Burb 2500 died while driving

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Old July 8th, 2017, 8:10 PM
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Default 96 Burb 2500 died while driving

Hello all,
I'm a new member and was hoping to tap into some knowledge.
I have a 1996 Chev Suburban 2500 7.4L 4x4 that is a few hundred miles away from turning 200,000. The truck was owned by a friend for 3yrs until I bought it from him 3yrs ago. There has been no major issues in those 6yrs. I replaced the fuel pump for him approx 1yr before the truck came to me.

Two weeks ago I loaded my family up and dragged a 16' trailer from our home in Washington state to Yellowstone NP. We had no problems on our way there, and the truck performed just fine during the 7days that we spent there. On our way home however, we were driving 70mph westbound on I-90, just west of Butte, MT, when the truck died. No sound that would indicate a catastrophic failure, just dead. The gauges lit up like a Christmas tree, and I was able to coast to the shoulder. Looking under the hood, I couldn't see any obvious sign of issue. No fluids leaking, no smoke, serpentine belt was intact, no burnt/severed/disconnected wires that I could see. The truck turns over, although it does so inconsistently. It seems to struggle, then turns over freely, then struggles again. I can hear the fuel pump when I turn the key and the battery is newish (1yr old). I pulled the plug out of cylinder #1 and see spark.

Before the trip, I changed the oil, oil filter, plugs, plug wires, cap, rotor, fuel filter, air filter, etc.

I'd like to get this truck back on the road without blindly throwing money at it.

Any help or suggestions would be appreciated.

Thank you in advance,
Steve

Last edited by 360concealment; July 8th, 2017 at 8:13 PM.
Old July 8th, 2017, 10:56 PM
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Does this have throttle body injection or individual cylinder?
Old July 8th, 2017, 11:59 PM
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No TBI on my truck
Old July 9th, 2017, 3:05 PM
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Steve, welcome to the forum.

Check timing chain.
Old July 20th, 2017, 4:47 PM
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Originally Posted by 73shark
Steve, welcome to the forum.

Check timing chain.
Replaced timing chain/sprockets. Replaced water pump and thermostat while everything up front was disassembled. Replaced coil pack (because its a hassle to get to). Issue persists.
Old July 20th, 2017, 5:22 PM
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It's electrical, I can't go from there, just my instinct




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