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1998 Chevrolet C3500 dies randomly when driving down the road - uphill, downhill or flat surfaces. Typically doesn't happen when it's cold. Sometimes it starts back up and sometimes it doesn&#

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  • yvonne Jan 16, 2013

    I didn't mention that it is a diesel engine and we have had the remote mount PMD kit changed out twice as well as the electrical fuel box. All repairs were done in 2012.

  • Jerome Minks
    Jerome Minks Jan 17, 2013

    sounds like the autoshutoff relay may be going out this shut down fuel to the injectors ..try changing that out and see if it works..repost please thnx

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  • Cars & Trucks Master
  • 3,103 Answers

My younger brothers' truck did the same thing and there was a relay up under the dashboard that would get hot and shut of(kind of a circuit breaker unit) most of the operating systems will flash at you when only battery voltage is available which explains the lights coming on..these newer trucks also have a performance chip in the system that will act up when it gets warm also..replace this and you may be ok..let me know what happens also.. good luck.

Posted on Jan 16, 2013

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Posted on Jan 02, 2017

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SOURCE: anti lock brakes

Brake system warning lights illuminate to alert the driver to various brake system conditions and are usually located on the instument cluster.

Each time the vehicle is started, the ABS control module performs a diagnostic self-check of the ABS system. During this self-check the ABS warning light in the dash panel insert will illuminate for a short period of time . After the self-check has completed the ABS warning light will go out.

If a malfunction is detected within the anti-lock braking system during the diagnostic self-check, the ABS warning light will illuminate and remain ON and ABS will be turned OFF, until the cause of the malfunction is repaired. How ever the conventional braking system will remain fully operational.
The brake warning light will illuminate if the brake fluid level becomes low or if the parking brake is engaged.
Hope that helps...........

Posted on Jul 20, 2008

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SOURCE: Blazer Stalling, Please Help

I am not sure but you might want to check the pressure of the fuel pump.

Posted on Feb 28, 2009

  • 21 Answers

SOURCE: My 93 Buick Park Ave. shuts off randomly when driving.

Check your fuel filter!

Posted on Apr 13, 2009

  • 118 Answers

SOURCE: Car dies while driving, now it won't start sometimes

Could be a fuel pump that is going bad. Some times when fuel pumps go bad they cavitate and pump not just gas but also air. If you get too much air in the line and not enough gas the car won't start. Have a mechanic check your fuel line pressure.

Posted on Aug 05, 2009

  • 398 Answers

SOURCE: Runs fine going uphill but starts misfireing going

po300 random misfire it needs a tune up..plugs and wires, air and fuel filter........po452 fuel pressure sensor or the fuel level sensor..The fuel pressure sensor is located on top of the fuel pump module.Hope this help...pls rate

Posted on Dec 16, 2009

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1998 Chevrolet C3500 dies randomly when driving down the road - uphill, downhill or flat surfaces. Typically doesn't happen when it's cold. Sometimes it starts back up and sometimes it doesn't....


U have an intermittent electrical connection causing the hassle. Check and clean all wiring junctions, etc. Also work the connections by sliding them in and out many times to remove any oxidation. U have to remember that a car's electrical system is low voltage and the slightest bit of corrosion can screw things up - example is dirty battery terminal wires with a new battery. Car will not crank but clean the terminals and away you go!!!!!!!!!!!!

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