Three times while driving at 50-60 miles per hour vehicle had total engine shut down. This occurred after driving approximately 2 hours. Coasted to the side of the road turned key off and waited 5 minutes or so and engine restarted. The third times happened around 10 miles or 15 minutes later and took at least 20 minutes before restart. When attempting restart multiple times there were no alarm/warning/engine lights come on. This is the cab to a class c motorhome.
The worst 2012 Gm G4500 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes1
- Engine1
- Steering1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes1
- Engine1
- Steering1
Recalls 1
Equipment: appliance: air conditioner
- What is wrong
- Trans-Air Manufacturing Corp. (Trans-Air) is recalling certain model year 2006-2014 GM G3500 and G4500 vehicles modified with Trans-Air add-on compressor mount kits, part numbers 4012506-01, 4012506-02, 4013126-01, 4013126-02, 4013235-01, 4013235-02, 4012909, 4013125, 4013222 and 717173 installed by Trans-Air personnel. After installing a compressor, a power distribution terminal strip may not have been properly reconnected.
- Risk
- If the power distribution terminal strip has a poor connection or a loose connection, the strip may arc or overheat, increasing the risk of a vehicle fire.
- Remedy
- Trans-Air will notify owners, and dealers will inspect the power distribution terminal strip connection, correcting it as necessary, free of charge. The recall began on May 29, 2015. Owners may contact Trans-Air customer service at 1‑800‑673‑2446.
Recall number 15V213000 · Recall details
Technical service bulletins for the 2012 Gm G4500 4
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This bulletin provides information on Warranty Administration – Required Operating Procedures
- This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full...
- Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip
- Proper Wheel Installation and Wheel Torque Techniques
What 2012 Gm G4500 owners say
Most recent owner complaints, unedited.
Compare the 2012 Gm G4500
Other model years
2012
Questions about the 2012 Gm G4500
Is the 2012 Gm G4500 reliable?
Owners have filed 1 complaint about the 2012 Gm G4500, close to a typical G4500 model year.
What is the most common problem with the 2012 Gm G4500?
Brakes, with 1 complaint. Next is engine (1).
How many recalls does the 2012 Gm G4500 have?
1 recall, covering equipment.
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