1990 Chevrolet S7

1990 Chevrolet S7 350 7.4L 270hp 454tq TBI V8

The 1990 Chevrolet S7 is a full-size pickup truck that was available with a variety of engine and transmission options. The most popular engine was the 350 7.4L 270hp 454tq TBI V8, which was paired with a 4-speed automatic transmission. Other engine options included a 305 5.0L 175hp 300tq V8 and a 454 7.4L 230hp 400tq V8. Transmission options included a 5-speed manual, a 4-speed automatic, and a 3-speed automatic.

The S7 was a popular choice for buyers who needed a powerful and reliable truck. It was also known for its spacious interior and comfortable ride. However, the S7 was not without its problems.

Engine 350 7.4L 270hp 454tq TBI V8

• Intake manifold gasket failure
  • Description/Symptoms: Coolant or oil leaks from the intake manifold, engine overheating, reduced power
  • Solution: Replace the intake manifold gasket
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Vortec engine lifter failure
  • Description/Symptoms: Tapping or ticking noise from the engine, reduced power
  • Solution: Replace the lifters
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Transmission

4-speed automatic

• Torque converter failure
  • Description/Symptoms: Shuddering or slipping during acceleration, loss of power
  • Solution: Replace the torque converter
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Transmission control module failure
  • Description/Symptoms: Erratic shifting, no shifting, check engine light
  • Solution: Replace the transmission control module
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Suspension

• Front suspension ball joint failure
  • Description/Symptoms: Clunking or rattling noise when turning or hitting bumps, uneven tire wear
  • Solution: Replace the ball joints
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Rear suspension leaf spring failure
  • Description/Symptoms: Sagging or broken leaf springs, rough ride
  • Solution: Replace the leaf springs
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Electrical

• Alternator failure
  • Description/Symptoms: Dimming lights, difficulty starting the engine, battery warning light
  • Solution: Replace the alternator
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Starter solenoid failure
  • Description/Symptoms: Engine cranks but does not start, clicking noise when trying to start
  • Solution: Replace the starter solenoid
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found

Exterior

• Rust on the body
  • Description/Symptoms: Rust spots on the body panels, especially around the wheel wells and rocker panels
  • Solution: Repair or replace the rusted body panels
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Interior

• Dashboard cracks
  • Description/Symptoms: Cracks or splits in the dashboard
  • Solution: Replace the dashboard
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Power window motor failure
  • Description/Symptoms: Power windows do not work, slow or intermittent window operation
  • Solution: Replace the power window motor
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Summary

The 1990 Chevrolet S7 is a powerful and reliable truck, but it is not without its problems. Some of the most common issues include intake manifold gasket failure, lifter failure, torque converter failure, and transmission control module failure. The S7 is also prone to rust on the body and dashboard cracks. The severity and cost of these issues can vary depending on the specific problem and the condition of the vehicle.