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U0100 Diagnostic Trouble Code Discussion for June 2011

Lost Communication With ECM


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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2007 Chevrolet Tahoe LT 5.3L No Start VIN: 1GNEK13067
U0100: Lost Communication With Engine/Powertrain Control Module ECM/PCM. Hi, we have a Tahoe here that has turned into a real problem child! Our customer went to start it one day & it wouldn't crank so they tried to jump it. Still no crank! They then had it towed to our local Chevy dealer because they thought they had some warr...
June 07, 2011
2008 Jeep Patriot Sport 2.4L No Start, Cuts out, Stall VIN: 1J8FF28W08
U0100: no comm with pcm in several mods but not the ecm not an active code. ... highway. Wouldnt start. Towed in. Started right up. not mil. We poled all modules and and found only a u0100 in several modules for lost ecm comm. While looking at codes it shut off. It wouldnt crank at all, the mil was on with key on. But scanner would no...
June 09, 2011
2008 Jeep Patriot Sport 2.4L No Start, Cuts out, Stall VIN: 1J8FF28W08
U0100: no comm with pcm in several mods but not the ecm not an active code. ... highway. Wouldnt start. Towed in. Started right up. not mil. We poled all modules and and found only a u0100 in several modules for lost ecm comm. While looking at codes it shut off. It wouldnt crank at all, the mil was on with key on. But scanner would no...
June 10, 2011
2007 Chevrolet Tahoe LT 5.3L No Start VIN: 1GNEK13067
U0100: Lost Communication With Engine/Powertrain Control Module ECM/PCM. Hi, we have a Tahoe here that has turned into a real problem child! Our customer went to start it one day & it wouldn't crank so they tried to jump it. Still no crank! They then had it towed to our local Chevy dealer because they thought they had some warr...
June 07, 2011
2008 Jeep Patriot Sport 2.4L No Start, Cuts out, Stall VIN: 1J8FF28W08
U0100: no comm with pcm in several mods but not the ecm not an active code. ... highway. Wouldnt start. Towed in. Started right up. not mil. We poled all modules and and found only a u0100 in several modules for lost ecm comm. While looking at codes it shut off. It wouldnt crank at all, the mil was on with key on. But scanner would no...
June 09, 2011
2008 Jeep Patriot Sport 2.4L No Start, Cuts out, Stall VIN: 1J8FF28W08
U0100: no comm with pcm in several mods but not the ecm not an active code. ... highway. Wouldnt start. Towed in. Started right up. not mil. We poled all modules and and found only a u0100 in several modules for lost ecm comm. While looking at codes it shut off. It wouldnt crank at all, the mil was on with key on. But scanner would no...
June 10, 2011