Question about 2002 Chevrolet Silverado 2500HD

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Blowing the 15 amp fuel heater fuse

I had a check engine light with a 0540 code and was told to replace the intake air heater relay. The first cold morning I get the light again and on investigation find the 15 amp fuel heater fuse is blown. I replaced the fuse and the next cold morning the code is set and the fuse is blown.

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4 Suggested Answers

  • 206 Answers

SOURCE: fuse for locks constantly blows

Try replacing the relay. Clean the socket of the relay and fuse

Posted on Feb 17, 2009

  • 1392 Answers

SOURCE: Cooling Fan Fuse

Sounds like a short in the wiring, or a bad fan motor drawing too much current. Check the wiring for shorts, if none are found, replace the fan motor.

Posted on Jun 10, 2009

  • 2359 Answers

SOURCE: 2003 chevy silverado air does

The air vents are control by vacuum line and or linkage.

Listen for hiss or feel for vacuum leak under the dash,

Feel for broken linkage(s) that are close to the vents.

WORK BACKWARD if you have small hands to feel out where is the missing link.

Posted on Jul 15, 2009

  • 1420 Answers

SOURCE: 15 amp fuel pump fuse

Welcome to

I would pull the fuel pump fuse and check , with an ohm meter, to ground to see if you have continuity if you do trace the wire back to fuel pump. too, fuel pump may have internal short. replace pump

Thank you for Using

Kind Regards, Lee

Your FixYa Expert and Master Technician


Posted on Jan 31, 2011

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Code p1659

ok , you scanned or Autozoned it, if latter?, fail you do.
did they write it down wrong?
the code must be told accurately, (im sure you know that)

this code needs honda only meanings, P1
Electronic Throttle Control System Control Relay Off Malfunction
blown 7.5a fuse #15?
baring a simple fuse.
read the FSM./
the FSM covers this code, what to do and to find which part is
bad , not guessing, the ECU cant tell you what part is bad or dirty.
it only tells you what tests failed.
read the FSM or take the car to any ASE certified Mechanic.
this car is Throttle by wire. technology. (a pain , the TSB proves it.)

ever heard of a TSB? all good mech read them first
here is one example, on topic. too.
quote: (look up you car, and YOUR TSBs, read them all)

MIL Comes On With DTC P1659 TSB 05-008
In cold temperatures, the MIL comes on with DTC P1659 (electronic throttle control system control relay OFF malfunction). PROBABLE CAUSE Moisture inside the throttle control relay may freeze. This would cause the relay to fail, storing DIG P1659 along with any of these DTCs: P0135: Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Malfunction, P0141: Rear Secondary Heated Oxygen Sensor (Secondary HO2S, Bank 1, Sensor 2) Heater Circuit Malfunction, P0155: Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction, P0161: Front Secondary Heated Oxygen Sensor (Secondary H025, Bank 2, Sensor 2) Heater Circuit Malfunction, P0498: Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit Low Voltage. CORRECTIVE ACTION Replace the electronic throttle control relay, the air/fuel sensor relay, and the starter cut relay.

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