M - VACUUM DIAGRAMS 1998 Pontiac Bonneville 1998 ENGINE PERFORMANCE General Motors Corp. - Vacuum Diagrams - 3.8L Buick; Le Sabre Oldsmobile; LSS, Eighty Eight & Regency Pontiac; Bonneville INTRODUCTION This article contains underhood views or schematics of vacuum hose routing. Use these vacuum diagrams as a guide during the visual. GM Full-Size Trucks 1988-1998 Vacuum Diagrams Repair Guide. Related: Repair Guides. Print. Share. Copy. Email. Share. Share. Pin. Share. Tweet. Access our free Vacuum Diagrams Repair Guide for GM Full-Size Trucks 1988-1998 through AutoZone Rewards. These diagrams include: Fig. 1: 1988-89 (VIN Z) C/K series with 4.3L;
MrSony submitted a new resource: G Body HVAC Vacuum Line/Wiring Routing PART 1 - Vacuum lines and wiring harness routing for most G-Bodies. Pics are ordered working your way from the engine compartment harness towards the HVAC controls in the dash. I can get more pics if need be, but keep in.. Tech / General Engine - Vacuum Lines Diagrams!!! I GOT THEM ALL!!!!! - I just collected ALL vacuum lines from 82 - 92 TG F-Bodies!!!! If anyone needs one, search below on this 1st page. Models covered with vacuum lines are: 1982-1984 2.5L TBI 1985-1986 2.5L TBI 1982 2.8L CARBURETED 1983 2.8L CARBURETED 1984 2.8L.