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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1997CHEVY EXPRESS G3500, VAN CARGO, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 70 (ENGINE CONTROLS - TESTS W/CODES - 4.3L)DIAGNOSTIC TROUBLE CODESDTC P0605 - VCM READ ONLY MEMORY (ROM)CIRCUIT DESCRIPTION
1997 Chevrolet Chevy Express G3500, Van Cargo, 6.5 F
Circuit Description
1997 Chevrolet Chevy Express G3500, Van Cargo, 6.5 FSECTION Circuit Description
WARNING: This page is about a different car, the 1998 GMC Savana, 1998 GMC Forward Control, 1998 Chevrolet Forward Control, 1998 Chevrolet Chevy Van, and 1998 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
VCM performs an internal self-test on its Random Access Memory (RAM) or read/write memory. If this self-test fails, this DTC will set.
Conditions for setting this DTC:
- Checksum does not match expected value.
- VCM unable to correctly read data from boot flash memory.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.