03 GMC 8.1 coil packs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**pound41** · 02-17-2013, 02:11 PM

Chasing a rabbit! 03 2500 HD 8.1 has 125k on it. The past few years in the winter when the temps change if you ran it a short distance and turned it off it didn't want to start the first few times or would cut off. Doing normal maintence
changed plugs and wires and fuel pressure regulator. Replaced coolant temp sensor and crankshaft positioning sensor. It still has the problem. After it starts I sometimes smell gas. It has sprung no trouble codes. Not sure about the coil packs. When you change or how you know one is weak or going bad.
Thanks

02-17-2013, 02:11 PM	#1
pound41 Registered User Join Date: Dec 2002 Location: Northern Virginia Posts: 1,269	03 GMC 8.1 coil packs Chasing a rabbit! 03 2500 HD 8.1 has 125k on it. The past few years in the winter when the temps change if you ran it a short distance and turned it off it didn't want to start the first few times or would cut off. Doing normal maintence changed plugs and wires and fuel pressure regulator. Replaced coolant temp sensor and crankshaft positioning sensor. It still has the problem. After it starts I sometimes smell gas. It has sprung no trouble codes. Not sure about the coil packs. When you change or how you know one is weak or going bad. Thanks



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