2003 GMC Sierra 1500 Q&A
2003 GMC Sierra 1500 Question: My GMC truck won't start. It is turns over but won't start.
maybe it has low fuel pressure? - Tomiko
You need at least three things for it to start. Verify spark, verify fuel pressure and volume with a gage and air. - PARTS GUY
Very helpful to know what engine you got but i can guess at it, must be the 4.3. Since you mentioned distributor. IF you have good spark at the plug it must be a fuel problem. Can you ever hear the in tank pump run? When key is turned on or bumping the starter and wait a second to see if it is running. Pressure gauge needed to check pump psi. at scharder valve behind the throttle body. - pushrod
check eng lite was on for 2 days. Was sitting in Walmart idling, started to run rough then died. wouldn't turn over and steering wheel wouldn't lock. Has new battery, all lights and electrical ...