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2010 Chevy Express 2500 - Power Issues
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mkieff
New User
Aug 19, 2023, 2:14 PM
Post #1 of 4
(859 views)
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2010 Chevy Express 2500 - Power Issues
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Prior to the issues the display said to service electric charging system, so I checked voltages on battery and alternator and they were good. Then the doors would lock and unlock at random times. Then we went somewhere, and started the van and the following stopped working.
Hazards
Turn Signals
A/C Compressor
Driver Side Door Indicator (Radio Stays On After Driver Exits)
Dome Light
I have replaced the RAP Relay, 125 AMP Mega Fuse, EMC (was unable to program key with new unit, and all the other issues still existed), checked battery, and alternator.
Any ideas on what I can check or try now. All the systems went out at the same time, they are all on different fuses. Any help would be great.
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mkieff
New User
Aug 19, 2023, 2:17 PM
Post #2 of 4
(857 views)
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Re: 2010 Chevy Express 2500 - Power Issues
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Note on replacing EMC. After the EMC was replaced, the car was unable to start due to not being able to program the key into the new EMC. It did have different system errors, but I believe that was due to the fact it could not communicate with them until the car was started. But the hazards and turn singles and radio should of started working if that was the issue.
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 19, 2023, 2:51 PM
Post #3 of 4
(853 views)
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Re: 2010 Chevy Express 2500 - Power Issues
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More testing, less parts cannon.
If you are getting low voltage codes, then you have low voltage somewhere and that's what you need to find.
If the car is starting on it's own, the problem is not likely in the battery but there are numerous other power connections that can have a problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
Veteran
/ Moderator
Aug 22, 2023, 11:36 PM
Post #4 of 4
(672 views)
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Re: 2010 Chevy Express 2500 - Power Issues
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When posting about a problem, it's best to post the actual reading you got from the tests you ran.
14.25 v is a reading...... good is a conclusion
Was the battery load tested? If this was me and the battery is 6 or more years old, I would start off with a new battery before doing any tests.
Over the years you wouldn't believe some of the weird problems bad batteries that had decent voltage readings, 12.x, have caused
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