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2017
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Rough Idle or Engine Misfire

Expert diagnosis and repair solutions for 2017 Chevrolet Silverado Rough Idle or Engine Misfire. Get step-by-step fixes, cost estimates, and professional advice.

Expert Repair Solutions

1
medium$150-$300
Replace faulty ignition coil and inspect wiring harness for damage or corrosion.
Source: https://www.justanswer.com/chevy/hnkx4-2017-chevy-silverado-5-3-110k-miles.html

Repair Steps:

  1. Inspect ignition coil and wiring harness for visible damage or corrosion.
  2. Replace the faulty ignition coil with a new one.
  3. Test the vehicle to ensure the misfire is resolved.
2
medium$100-$200
Check for and repair vacuum leaks around the throttle body and intake manifold.
Source: https://repairpal.com/chevrolet/silverado-1500/2017/rough-idle

Repair Steps:

  1. Inspect the throttle body and intake manifold for signs of vacuum leaks.
  2. Use a smoke machine or spray method to identify leaks.
  3. Seal any identified leaks and retest the vehicle for idle smoothness.
3
hard$500-$1000
Address ECM internal fault causing paired cylinder misfires.
Source: Bulletin PIP5582

Repair Steps:

  1. Diagnose the ECM using specialized diagnostic tools.
  2. Reprogram or replace the ECM if necessary.
  3. Verify the repair by checking for the absence of misfire codes.
4
medium$200-$400
Replace accessory drive belt and idler pulley to correct misalignment.
Source: Bulletin GCUS-3-864

Repair Steps:

  1. Inspect the accessory drive belt and idler pulley for misalignment.
  2. Replace the idler pulley and belt with the correct parts.
  3. Ensure proper alignment and tension of the new belt.
5
easy$50-$100
Clean throttle body and upper cylinders to address rough idle.
Source: https://www.reddit.com/r/Chevy/comments/mp3uh1/brand_new_silverado_1500_rough_idle_service/

Repair Steps:

  1. Remove the throttle body and clean it thoroughly with a throttle body cleaner.
  2. Use a fuel system cleaner to clean the upper cylinders.
  3. Reinstall the throttle body and test the vehicle for improved idle.

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