According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2008 Chevrolet Suburban has 7 documented known issues, with 4 rated critical. The most serious are Heated Washer Fluid System Fire Risk on 2007-2008 Suburban (08V441), Heated Washer Fluid System Removed for Fire Risk — Recall 10V240000, AFM/DFM Lifter Failure (5.3L/6.2L V8) ($1,500-$4,000 repair) and Brake Line Corrosion (Rust Belt) ($500-$1,500 repair). Across all issues with published estimates, repair costs range from $50 to $4,000. DIY maintenance guides at au7o.io.