Hello all,
Just moved over from Trailvoy by recommendation. I am hoping for a "seasoned" Trailblazer expert on this one. This may be long but, I want you to have all info possible.
2005 Chevy Trailblazer LS sport 4.2 4X4 172000 miles The issue is after being driven 10-20 miles it will just shut off at a light. No warning, no shaking, no shuttering just shut off. It will restart immediately and I will smell a rich exhaust smell. It will only do it after being driven, not when cold or short trips.
It runs so smooth that you don't feel it running and when the idle sets at 650 ish, it is ultra smooth then it's like the key gets turned off. ABSOLUTELY NO CODES in either active or pending. None in permanent. Both PCM and BCM are code free.
Whats been done: All parts are Delco, Delphi whenever possible.
Throttle body cleaned, then replaced with a new one - no change
New fuel pump assembly
New Coils (6) and A/C plugs
New Crank sensor, new cam sensor, new VVT solenoid, new MAP sensor, new oil pressure switch, new ignition switch, new battery, Upstream and downstream O2 sensors, new thermostat, temp sensor, cooling fan clutch, IAT sensor, air filter, emisions test.
This model does not have a fuel filter or external fuel pressure regulator.
I have had the PCM and BCM updated from the GM dealer.
I also had my local shop (ex GM tech of 23 years) with both Tech 2 and Snap-on diagnostic computers spend over 4 hours trying to find it which included him checking wiring harnesses and grounds. He's stumped too....
Anyone?????
Just moved over from Trailvoy by recommendation. I am hoping for a "seasoned" Trailblazer expert on this one. This may be long but, I want you to have all info possible.
2005 Chevy Trailblazer LS sport 4.2 4X4 172000 miles The issue is after being driven 10-20 miles it will just shut off at a light. No warning, no shaking, no shuttering just shut off. It will restart immediately and I will smell a rich exhaust smell. It will only do it after being driven, not when cold or short trips.
It runs so smooth that you don't feel it running and when the idle sets at 650 ish, it is ultra smooth then it's like the key gets turned off. ABSOLUTELY NO CODES in either active or pending. None in permanent. Both PCM and BCM are code free.
Whats been done: All parts are Delco, Delphi whenever possible.
Throttle body cleaned, then replaced with a new one - no change
New fuel pump assembly
New Coils (6) and A/C plugs
New Crank sensor, new cam sensor, new VVT solenoid, new MAP sensor, new oil pressure switch, new ignition switch, new battery, Upstream and downstream O2 sensors, new thermostat, temp sensor, cooling fan clutch, IAT sensor, air filter, emisions test.
This model does not have a fuel filter or external fuel pressure regulator.
I have had the PCM and BCM updated from the GM dealer.
I also had my local shop (ex GM tech of 23 years) with both Tech 2 and Snap-on diagnostic computers spend over 4 hours trying to find it which included him checking wiring harnesses and grounds. He's stumped too....
Anyone?????
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