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8.0

pretty bad
Typical Repair Cost:
No data
Average Mileage:
80,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2012 Chevrolet Suburban electrical problems

electrical problem

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2012 Chevrolet Suburban Owner Comments

problem #1

Mar 152018

Suburban Limited 5.8L

  • Automatic transmission
  • 80,000 miles

A D V E R T I S E M E N T S

Bought the Suburban at Demontrand in Conroe Texas used. After having it for 1 week I was driving to Corpus Christi, Texas on the highway at 75 miles and hour. I had the cruise control on and turned on the blinker to change lanes and it cancelled the cruise control. The tachometer and engine revved up, the locks started going up and down, the lights on the dash flashed on and off, the unfastened seat belt bell starts sounding and the headlights flicked off and on.

Pulled over and turned off the truck and it was if the battery was totally dead. Opened the hood and looked but could not see any problem. Closed the hood and the inside lights came back on and the truck started. Took it back to DeMontrand but they could find nothing wrong. They would not take the vehicle back.

The vehicle has done this numerous times over the 2 years I have owned it. I have even taken it to the Chevy dealership in Grapeland, Texas where I live while it was misbehaving and they put it on the diagnostic machine but could not detect any definite problem. I have spent about $1500 with them guessing this and that could be the problem but they have never been able to fix it. They still say we can try to do this and that at a cost but no guarantee it will fix the problem.

Sometimes when you pull over and turn it off when the problem occurs, there is no power as if the battery is dead. The only way to fix it temporarily is to turn the engine off and tap on the negative battery post with a small hammer I now carry at all times. This fixes the problem until it decides to act up again which can be whenever it wants. It could be 3 days or 3 weeks. There is nothing special that seems to trigger it to act up. It just does it when it feels like it but no definite pattern.

- Thomas A., Grapeland, US

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