2012 Chevrolet Express 4500

Owner complaints

What owners report most

1. Fuel/propulsion system2
2. Service brakes2
3. Electrical system1
4. Power train1
5. Steering1

Latest complaints

• Feb 15, 2018ND86,000 mi
  Fuel/propulsion system
  TL* the contact owns a 2012 chevrolet express 4500. In cold weather, the diesel exhaust fluid (def) froze, which caused the vehicle to decelerate until it eventually idled. The dealer (kupper chevrolet, 1500 2ND st ne, mandon, nd 58554) stated that they needed to keep the vehicle in a heated shop…

  TL* the contact owns a 2012 chevrolet express 4500. In cold weather, the diesel exhaust fluid (def) froze, which caused the vehicle to decelerate until it eventually idled. The dealer (kupper chevrolet, 1500 2ND st ne, mandon, nd 58554) stated that they needed to keep the vehicle in a heated shop to prevent the def from freezing. The vehicle was not repaired. The manufacturer was also contacted and was unable to provide assistance. The approximate failure mileage was 86,000. The vin was unavailable.

• Dec 8, 2016TX1 miFire
  Electrical system · Fuel/propulsion system
  On 9/30/2016, a thermal event occurred while the bus was in the shop for routine maintenance. As the bus was being moved (backed-out) of the service bay and smoke was seen escaping from the CNG tank storage compartment at the rear of the bus. Location: 4127 elm st., dallas, tx 75226 a dallas area…

  On 9/30/2016, a thermal event occurred while the bus was in the shop for routine maintenance. As the bus was being moved (backed-out) of the service bay and smoke was seen escaping from the CNG tank storage compartment at the rear of the bus. Location: 4127 elm st., dallas, tx 75226 a dallas area rapid transit (dart) employee quickly opened the compartment and extinguished the small flame. Damage was limited to the CNG fuel tank solenoid (melted) and the connecting harness (melted). This vehicle has a high pressure electronic shut-off solenoid valve mounted directly to the on-board CNG fuel tank(s). note: if there IS a fuel leak or other combustible material in the vicinity, there IS a risk of ignition. dart has a total of 123 ea., 2012 model year gm 6.0L chev express shuttle buses which were purchased from national bus sales & leasing by dart. Prior to delivery, the buses were modified by arboc and converted to dedicated CNG operation by impco automotive in union city, in. each vehicle IS configured with (2 ea.) lincoln 21' x 80' CNG cylinders fitted with omb solenoid valves mounted inside an enclosed storage compartment behind the passenger area. there were similar occurrences documented under other recall notifications (gm bulletin #: 13139 and impco automotive #: 13v-225); where the oem identified root causes and corrective actions. under those gm and/or impco reports and/or defect recalls reported to nhtsa, similarly, the connector to the CNG fuel tank experienced high-resistance short in the connector and caused overheating or in some instances a self-extinguishing flame.

• Apr 23, 2013CA13,000 mi
  Service brakes · Steering

  Traveling at 50 to 55mph I make a easy brake application and the front wheels will start oscillating until the front goes into a violent shake. Releasing the brake will stop the shaking. This IS a cutaway school bus. I'm the mechanic and the driver brought it to my attention. She noticed it while braking on a downhill. I was able to duplicate it on a level surface. Haven't found the fix yet. *tr

• Mar 25, 2013KS5,000 mi
  Power train · Service brakes

  This IS a brand new bus, gm chassis. it has a limited slip differential. the brake lines are routed in front of the rear differential. twice, we have had rocks hit the brake line and sheer it off causing total brake failure. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(B)(6). *tr

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11011900This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 11011805This Preliminary information communicates a GM part number forreflective high temperature heat or insulating tape when repairing wiring harnesses.
• 11011709This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
• 11011205This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
• 11010566This service bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).
• 11010545This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S).
• 11010544This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
• 11010491This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
• 11010490This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 11010421This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 11009764This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
• 11009756This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
• 11009532This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 11009531This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
• 11009088This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
• 11009039This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 11008956This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
• 11008906This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 11008898The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.
• 11007936This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
• 11007935This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
• 11007718This service bulletin explains how to identify possible DEF system contamination.
• 11007208This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
• 11007154This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 11007123This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
• 11007121This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 11007116This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
• 11007115This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 11007095This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
• 11007091This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 11006682This service bulletin provides information on a guide to help reduce repeat visits for the same customer concern.
• 11006670This service bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts.
• 11006644This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
• 11006621Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
• 11006511This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
• 11006421GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.
• 11006282This service bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels.
• 11006278This service bulletin describes the U.S. Dealer Special Tool Loan Program process.
• 11005339This service bulletin explains the difference in oil filters for gas engines with new oil pump control systems and the possibilities of what may happen using the incorrect filter.
• 11005311This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.

Every Chevrolet Express 4500 model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.