Two new batteries, now truck begins to start but then goes dead, then it does start. Climate control also resets itself. Why?

Asked by Apr 16, 2016 at 07:44 PM about the 2007 Chevrolet Silverado 2500HD LTZ Extended Cab LB

Question type: Maintenance & Repair

2 Answers

#1 Check if you have Spark,#2 Check if you have fuel Coming Out to your injectors.. Could be a Bad Coil Pack, or a Bad Fuel Pump

13,345

Check for codes there stored on the PCM (vehicles computer) borrow or buy a basic OBDII code reader. My shot in the dark answer is the PCM lost its KAM (keep alive memory) which controls idle function.. start it and let it idle / or try and keep it running with the accelerator so the system can relearn. So you replaced the battery 2 times? then the start and stall problem began ? finally may have a problem in the HVAC control module.

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