1999 GMC Sierra 2500

1999 GMC Sierra 2500

The 1999 GMC Sierra 2500 is a full-size pickup truck that was available with a variety of engine and transmission options. The most popular engine option was the 6.0L V8, which produced 300 horsepower and 360 lb-ft of torque. Other engine options included the 5.3L V8, the 6.5L V8, and the 7.4L V8. The 4-speed automatic transmission was the most common transmission option, but a 5-speed manual transmission was also available.

People who like the 1999 GMC Sierra 2500 often praise its powerful engines, spacious interior, and comfortable ride. However, some people have reported issues with the vehicle’s reliability.

Engine

6.0L V8

• Intake manifold gasket failure
  • Description/Symptoms: This issue can cause coolant and oil to leak from the intake manifold. Symptoms include overheating, coolant loss, and oil leaks.
  • Solution: The intake manifold gasket will need to be replaced.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: 02V005000

5.3L V8

• No issues found

6.5L V8

• Injector failure
  • Description/Symptoms: This issue can cause the engine to run rough, misfire, and lose power. Symptoms include decreased fuel economy, difficulty starting, and black smoke from the exhaust.
  • Solution: The injectors will need to be replaced.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: 99V029000

7.4L V8

• No issues found

Transmission

4-speed automatic

• Transmission slipping
  • Description/Symptoms: This issue can cause the transmission to slip out of gear, especially when shifting into higher gears. Symptoms include difficulty accelerating, erratic shifting, and a burning smell.
  • Solution: The transmission may need to be rebuilt or replaced.
  • Estimated Cost to Fix: $1,500 - $3,000
  • Recalls: None Found

5-speed manual

• No issues found

Suspension

• Front suspension wear
  • Description/Symptoms: This issue can cause the front suspension to become loose and noisy. Symptoms include clunking noises, vibration, and poor handling.
  • Solution: The front suspension components will need to be inspected and replaced as necessary.
  • Estimated Cost to Fix: $500 - $1,500
  • Recalls: None Found

Electrical

• Alternator failure
  • Description/Symptoms: This issue can cause the battery to drain and the vehicle to lose power. Symptoms include dim headlights, flickering dashboard lights, and difficulty starting the engine.
  • Solution: The alternator will need to be replaced.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: 01V078000
• Battery failure
  • Description/Symptoms: This issue can cause the vehicle to lose power and become inoperable. Symptoms include difficulty starting the engine, dimming headlights, and a dead battery.
  • Solution: The battery will need to be replaced.
  • Estimated Cost to Fix: $100 - $200
  • Recalls: None Found

Exterior

• Tailgate rust
  • Description/Symptoms: This issue can cause the tailgate to rust and become difficult to open and close. Symptoms include rust spots, peeling paint, and a stuck tailgate.
  • Solution: The tailgate will need to be replaced.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found

Interior

• Dashboard cracking
  • Description/Symptoms: This issue can cause the dashboard to crack and become unsightly. Symptoms include cracks in the dashboard, peeling vinyl, and fading colors.
  • Solution: The dashboard will need to be replaced.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Power window failure
  • Description/Symptoms: This issue can cause the power windows to stop working. Symptoms include inoperable power windows, intermittent operation, and noisy window motors.
  • Solution: The power window motor or switch will need to be replaced.
  • Estimated Cost to Fix: $200 - $500
  • Recalls: 02V266000

Summary

The 1999 GMC Sierra 2500 is a capable and powerful pickup truck that has some potential reliability issues. The most common problems reported by owners include intake manifold gasket failure, injector failure, transmission slipping, front suspension wear, alternator failure, battery failure, tailgate rust, dashboard cracking, and power window failure. The severity of these issues can vary, but some of them can be expensive to fix. Overall, the 1999 GMC Sierra 2500 is a solid choice for those who need a heavy-duty pickup truck, but it’s important to be aware of the potential issues before buying one.