SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 755 (AUTOMATIC TRANSMISSION, 4L60-E/4L65-E (TROUBLESHOOTING))TROUBLESHOOTINGNO OVERRUN BRAKING - MANUAL 3-2-1
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M

No Overrun Braking - Manual 3-2-1

2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION No Overrun Braking - Manual 3-2-1
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
No Overrun Braking - Manual 3-2-1

Checks Causes
External Linkage Not adjusted properly
Valve Body Assembly (60)
  • 4-3 Sequence valve stuck
  • Checkball mispositioned
  • Spacer plate and gaskets incorrect, damaged or mispositioned
Overrun and Forward Clutch Assembly (644-651)
  • Turbine shaft oil passages plugged or not drilled
  • Turbine shaft seal rings damaged
  • Turbine shaft sealing balls loose or missing
  • Porosity in forward or overrun clutch piston
  • Overrun piston seals cut or damaged
  • Overrun piston checkball not sealing
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.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.