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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > The 02-09 "How-To" and DIY Section

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  #1  
Old 09-13-2018, 11:58 AM
kruzin4now kruzin4now is offline
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Join Date: Sep 2018
Posts: 1
multiple engine codes

My Mother-n-law has a 2003 Trailblazer, V8, auto. Last night it died on her and has multiple engine codes showing:
p0107
p0172
p0303
p0335
p0336
p0340
p0440
p1481
p1515
p1516

My question(if anyone can help)is: Are these codes related to maybe one or two issues? Could it be the ECM failed?
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  #2  
Old 09-14-2018, 08:47 AM
TB-Al's Avatar
TB-Al TB-Al is offline
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2007 Chevy TrailBlazer LS
Graystone Metallic 4.2L I6 2WD
Join Date: Nov 2017
Location: Pleasure Island, Al.
Posts: 175
https://www.obd-codes.com/trouble_codes/

p0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
p0172 System Too Rich (Bank 1)
p0303 Cylinder #3 Misfire
p0335 Crankshaft Position Sensor A Circuit Malfunction
p0336 Crankshaft Position Sensor Range/Performance
p0340 Camshaft Position Sensor Circuit Malfunction
p0440 Evaporative Emission Control System Malfunction
p1481 Cooling Fan Relay 2 Control Circuit
p1515 Control Module Throttle Actuator Position Performance
p1516 Control Module Throttle Actuator Position Performance

That's quite an assortment but all possibly related to the 5V sensor references coming from the PCM/ECM. I would check the battery voltage and then the PCM connector.
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