1999 GMC B7

Introduction

The 1999 GMC B7 is a full-size van available with several engine and transmission options. The 5.7L V8 engine produces 255 horsepower and 330 lb-ft of torque. Paired with the 4-speed automatic transmission, the B7 can tow up to 8,600 pounds. Owners appreciate the B7’s spacious cabin, powerful engine, and dependable performance. However, some have reported issues with specific components.

Engine

• 5.7L V8
  • Intake Manifold Gasket Failure
    • Description/Symptoms: Coolant leaks, overheating, rough idling
    • Solution: Replace intake manifold gasket
    • Estimated Cost to Fix: $400 - $800+
    • Recalls: None Found
  • Head Gasket Failure
    • Description/Symptoms: White smoke from exhaust, coolant leaks, overheating
    • Solution: Replace head gasket
    • Estimated Cost to Fix: $1,000 - $2,000+
    • Recalls: None Found

Transmission

• 4-Speed Automatic
  • Transmission Slippage
    • Description/Symptoms: Difficulty shifting, delayed engagement, loss of power
    • Solution: Overhaul or replace transmission
    • Estimated Cost to Fix: $1,500 - $3,000+
    • Recalls: None Found

Suspension

• Strut Failure
  • Description/Symptoms: Noises when driving over bumps, poor handling, uneven tire wear
  • Solution: Replace struts
  • Estimated Cost to Fix: $500 - $1,000+ per axle
  • Recalls: None Found

Electrical

• Alternator Failure
  • Description/Symptoms: Dim headlights, flickering lights, battery not charging
  • Solution: Replace alternator
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Exterior

• Rust
  • Description/Symptoms: Corrosion on body panels, particularly on the lower portions
  • Solution: Repair or replace affected panels
  • Estimated Cost to Fix: Varies depending on the extent of rust
  • Recalls: None Found

Interior

• Power Window Motor Failure
  • Description/Symptoms: Windows not operating, grinding noises
  • Solution: Replace power window motor
  • Estimated Cost to Fix: $200 - $400 per window
  • Recalls: None Found

Summary

The 1999 GMC B7 is generally a reliable vehicle, but it is not immune to some mechanical issues. The most common problems involve the engine, such as intake manifold gasket and head gasket failures. Other concerns include transmission slippage, suspension wear, and electrical issues. While the cost of repairs can be significant, the B7 remains a popular choice for those in need of a spacious and capable van.