Engine Mechanical problem
2003 Chevy Silverado V8 Four Wheel Drive Automatic 108000 miles
my truck wont start, it will crank but will not fire up, fuel pump is making noise so its pumping, is my fuel not getting sent to were it needs too be, what is causing it not to start, it is a fuel problem im 100% positive on that I just dont know what part is not working
Cranks but no start condition: Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.
October, 13, 2010 AT 12:02 AM
Do you actually have any fuel? There is a service bulletin about the fuel gage not reading propperly? Here is a copy.
Bulletin No: 04-08-49-018E
Date: January 05, 2005
Subject: Cranks But No Start, Stall, Inaccurate/Incorrect Fuel Gauge Reading, No Fuel, Vehicle is Out of Fuel and Fuel Gauge Reads Above Empty (Replace Fuel Level Sensor)
Models: 2001-2004 Cadillac Trucks
1999-2004 Chevrolet and GMC Trucks
with Gasoline Engine (VINs Z, X, V, T, U, N, G, 6, 8 - RPOs LU3, LR4, LM7, LQ4, LQ9, L59, L18, LK5 L52)
Attention: Parts are currently available for vehicles with Variable Fuel (VIN Z - RPO L59) vehicles. Please refer to Corporate Bulletin Number 04-06-04-01 2B or newer for Variable Fuel (VIN Z - RPO L59) vehicles.
Supercede: This bulletin is being revised to include information on the Chevrolet Colorado and the GMC Canyon. Please discard Corporate Bulletin Number 04-08-49-018D (Section 08 - Body and Accessories).
Some customers may comment on the vehicle stalling and will not restart, vehicle ran out of fuel, vehicle appears to be out of fuel but the fuel gauge reads above empty. The fuel gauge may read 1/4 tank.
Contamination on the fuel sending card may cause inaccurate/incorrect fuel gauge readings.
Follow the service procedure below for diagnosis and repair of this concern.
1. Confirm that the vehicle is actually out of fuel.
If the vehicle is not out of fuel but Engine Cranks but Does Not Run, refer to the appropriate Service Information.
If the vehicle is out of fuel and the gauge does not read empty, test the fuel gauge. Refer to the following information: - Fuel Gage Inaccurate or Inoperative Single Tank
- Fuel Gage Inaccurate or Inoperative Dual Tanks
- Fuel Gage Inaccurate or Inoperative Colorado and Canyon
2. If testing reveals that the fuel gauge is operating correctly, replace the fuel sensor assembly and auxiliary tank fuel level sensor if equipped.
3. Replace the fuel level sensor. Refer to the following appropriate service information: