C0337 GMC Auto Trouble Code
C0337 GMC OBD2 may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.
The computer notices the canister is empty when it detects a leaner condition (all the vapors are used up) and it resumes normal fuel delivery. Some car manufacturers then close the vent solenoid but leave the purge solenoid open. That creates a vacuum throughout the entire fuel storage system. Once the correct vacuum is reached, it closed the purge solenoid and waits to see if the vacuum holds.
C0337 GMC Possible Solution:
Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.
C0337 GMC Description For All Models :
- Gmc Acadia
- Gmc Autonomy
- Gmc Canyon
- Gmc Envoy
- Gmc Firebird
- Gmc Jimmy
- Gmc Safari
- Gmc Savana
- Gmc Sierra
- Gmc Sonoma
- Gmc Suburban
- Gmc Terra
- Gmc Terracross
- Gmc Terradyne
- Gmc Terrain
- Gmc Typhoon
- Gmc Yukon
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C0337 GMC Trouble Repair :
C0337 GMC code shows that location the body harness connector, located in and around the left hand kick panel area or inside the IP (consult a shop manual for location). Water can leak into the connector from clogged sunroof drains, A-pillar leaks, or windshield or cowling leaks. |
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