GMC Savana 3500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your GMC Savana 3500

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GMC Savana 3500 Problems

Reduced Power and Check Engine Light

The GMC Savana 3500 uses a throttle position sensor (TPS) which commonly fails and causes:

This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS.

To correct this issue, the wiring harness, connector, and throttle position sensor must be inspected, tested, and/or replaced. The most common cause is a faulty TPS.

Instrument Panel Lights Flickering and Exterior Lights Intermittent

The headlight switch used on the GMC Savana 3500 is known to fail through normal operation. Since the headlight switch is also integrated into the interior lights, a malfunctioning switch can cause issues with interior lights as well.

  • Symptoms of a failed headlight switch include:
  • Headlights and taillights failing to turn on or off
  • Interior lights flicker, or fail to turn on or off
  • Gauge cluster lighting off or flickering with headlights on
  • Parking light malfunctions  

This issue is well known with General Motors Trucks and SUVs, and is solved by testing and, if needed, replacing the headlight/dimmer switch. Bad grounding wires at the tail-lights, and dirty/corroded tow package wires can also lead to some of these issues. 

"No start" Caused By Failed Fuel Pump

The fuel pump may fail causing the engine to stall and not restart.

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GMC Savana 3500 Recalls

Vehicle Equipped With Improper Inside And Outside Mirror Combinations

The vehicles were built with an improper mirror combination of no inside rear view mirror and a right hand convex mirror. Vehicles require both side mirrors being flat if no inside mirror is provided. Dealers will install a right hand flat rear view mirror free of charge to resolve the concern.

Engine Stalls From Electrical Module Short

The chassis electrical module can short due to internal contamination. This can result in the vehicle stalling. Dealers will replace the chassis electronic module free of charge to resolve the concern.

Natural Gas Leak

Certain vehicles equipped to run on compressed natural gas are being recalled because the high pressure natural gas regulator could develop a leak, increasing the risk of a fire or explosion. Dealers will replace the natural gas regulator to correct this concern.

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GMC Savana 3500 Reviews

Paint comes off the body in big flakes very bad paint work. I have seen many of the same issues
White paint is peeling down to the primer in large flakes on the hood, top, and right hand passenger door.

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