Investigating the P0100 Code on Your 2024 GMC Yukon
A P0100 code on your 2024 GMC Yukon signals the ECM has detected a mass airflow (MAF) sensor circuit malfunction. The Yukon's engine options — 5.3L V8, 6.2L V8, or 3.0L Duramax turbo-diesel — all require precise MAF data for optimal management. Under full warranty, a GMC dealer visit handles this at no cost.
Understanding P0100
P0100 means the MAF sensor signal is erratic, intermittent, or outside expected parameters. For the Yukon's large-displacement engines and DFM cylinder deactivation, reliable airflow data is critical.
Common Symptoms
- Check engine light on
- Rough idle
- Reduced power
- Poor fuel economy
- Hesitation during acceleration
- DFM issues
Top Causes Ranked by Likelihood
- MAF sensor contamination (35-40%) — Dust and debris
- Air filter issue (20-25%) — Damaged or dirty filter
- Intake duct leak (10-15%) — Cracked boot
- Electrical fault (10-15%) — Loose connector
- MAF sensor failure (10-15%) — Component defect
- ECM software (5-10%) — Calibration update
Warranty Coverage
Your 2024 Yukon is covered by GM's 3-year/36,000-mile bumper-to-bumper warranty through 2027, 5-year/60,000-mile powertrain warranty through 2029, and the federal 8-year/80,000-mile emissions warranty. All MAF repairs are covered.
Estimated Costs (Reference Only)
- MAF sensor replacement: $100-280 (OEM) + $80-150 (labor)
- All covered under warranty on 2024 models