2012 Chevrolet Silverado 3500 HD Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2012 Chevrolet Silverado 3500 HD

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2012 Chevrolet Silverado 3500 HD Problems

Reduced Power and Check Engine Light

The throttle position sensor (TPS) on the Chevrolet Silverado 3500 HD is notorious for failure which 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.

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2012 Chevrolet Silverado 3500 HD Questions

service trailer brake system light is on in dash. service stabiltrac light is on (1 answer)

in dash. only 13000 miles driven and never trailered anything. brakes seem to be applying themselves when I'm driving and getting hot especially the front. also causing the steering wheel to shake.

What would cause one DT code u0101 and make my transmission stay in 2nd gear? (2 answers)

Cant tell what gear its in park, reverse or drive, doesnt haveva trailor haul mode, doors automatically lock late and dont automatically unlock when i turn ignition off, and does not display transmission temperature! Started doing this after i dis connected and replaced battery, code reads u0101 ...

The head light bulbs are constantly blowing & do not go beyond 1 month L&R. (1 answer)

Tried to replace with expensive top of the range light bulbs, but am still having the same problem. Has anybody else experienced this?

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2012 Chevrolet Silverado 3500 HD Recalls

Ignition Switch

The ignition switch actuator can bind causing the ignition switch to stick in the "start" position. If this were to occur the actuator can unexpectedly release, cause the ignition switch to snap back into the "Accessory" position. This would cause the engine to turn off with an associated loss of brake and steering power assist. If these conditions were to lead to a crash the airbags may not deploy as expected. Dealers will inspect and replace the ignition lock housing as necessary to correct this concern.

The Fuel Gauge Reading May Be Incorrect

Vehicles equipped with a 6.6L diesel engine and dual fuel tanks are being recalled because the transfer pump that moves fuel from the rear tank to the front tank could cause the fuel gauge in show the incorrect fuel level. The engine could stall unexpectedly, increasing the risk of a crash. Dealers will inspect the fuel transfer pump and replace it as necessary to correct this concern. 

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2012 Chevrolet Silverado 3500 HD Reviews

Rated
based on 2 customer reviews
Bought brand new Silverado 3500 dualie and since new we've had white smoke is coming out from under the hood on passenger side near the windshield when stopping at traffic lights/stop signs. Looks like there's a factory defect with the diesel exhaust fluid leaking and dripping onto the manifold or exhaust pipes which turns into smoke. Just took it into dealer and they said there's a GM servic...
I purchased a Chevy Silverado 3500 HD 1-31-2012. A couple weeks after we got the truck the low coolant message came on the coolant drops two inches from the full mark. We took the truck to the dealer they did a pressure test on it didn’t see any leeks. A week or so later brought the truck back the dealer replaced the coolant tank. We had to take it back AGAIN we had gone through four gallons...

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