Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 907 (ENGINE CONTROLS DIAGNOSIS - 4.8L, 5.3L, & 6.0L (DTCS P0449 TO P2108))
2002 Chevrolet Avalanche 2500, RWD
Section 907 (Engine Controls Diagnosis - 4.8L, 5.3L, & 6.0L (DTCS P0449 To P2108))
2002 Chevrolet Avalanche 2500, RWDSECTION Section 907 (Engine Controls Diagnosis - 4.8L, 5.3L, & 6.0L (DTCS P0449 To P2108))
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnosis
- DTC P0449
- DTC P0452
- DTC P0453
- DTC P0455
- DTC P0496
- DTC P0506 (TAC)
- DTC P0507 (TAC)
- DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610
- DTC P0641
- DTC P0650
- DTC P0651
- DTC P1106
- DTC P1107
- DTC P1111
- DTC P1112
- DTC P1114
- DTC P1115
- DTC P1125
- DTC P1133 or P1153
- DTC P1134 or P1154
- DTC P1380
- DTC P1381
- DTC P1516
- DTC P2101
- DTC P2108
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.