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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2 (ENGINE CONTROLS - ON-VEHICLE ADJUSTMENTS)IGNITION TIMING2.0L
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Ignition Timing: 2.0L
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION 2.0L
WARNING: This page is about a different car, the 2000 Chevrolet Tracker. However, it is still accessible from the selected car via links, so may be relevant.
- Install scan tool. Start engine and allow it to reach normal operating temperature. Ensure A/C is off, transmission is in Neutral (M/T) or Park (A/T), and parking brake is fully engaged. Connect an inductive timing light to ignition coil No. 1 wiring harness. Using scan tool, select special functions, and then engine output controls.
- Using scan tool, turn fixed spark mode on. Observe spark parameter. Scan tool should display 5 degrees, indicating fixed spark mode has been activated. Using timing light, ensure crankshaft pulley mark aligns with timing pointer, indicating timing is correctly set at 5 degrees BTDC. See Fig 1 . If ignition timing is 4-6 degrees BTDC, ignition timing is okay. If ignition timing is not 4-6 degrees BTDC, go to next step.
- To adjust ignition timing, loosen Camshaft Position (CMP) sensor housing bolt. See Fig 2 . To advance ignition timing, rotate CMP sensor housing clockwise. To retard ignition timing, rotate CMP sensor housing counterclockwise.
- Recheck ignition timing. Readjust ignition timing as necessary. Tighten CMP sensor housing bolt to 11 ft. lbs. (15 N.m). Using scan tool, turn fixed spark mode off. Using timing light, ensure crankshaft pulley mark and timing pointer indicate 12-16 degrees BTDC. See Fig 1 .
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.