| # of complaints | problem description | vehicle |
| 4 | intake manifold gasket leak | 2003 Buick Century |
| 10 | leaking coolant, intake manifold gasket failure | 2001 Buick Century |
| 4 | intake manifold gasket failure | 2000 Buick Century |
| 4 | intake manifold gasket failure | 1999 Buick Century |
| 3 | leaking coolant from intake manifold and valves | 1999 Buick Century |
| 1 | lower intake manifold leaking coolant | 1998 Buick Century |
| 1 | intake manifold anti-freeze leak | 2004 Buick LeSabre |
| 1 | intake manifold pitted | 2004 Buick LeSabre |
| 1 | intake manifold exploded, engine caught fire | 2000 Buick LeSabre |
| 1 | intake manifold crack | 1999 Buick LeSabre |
| 5 | cracked intake manifold | 1998 Buick LeSabre |
| 3 | intake manifold gasket failure | 1997 Buick LeSabre |
| 1 | coolant seeping on the outside of intake manifold | 2001 Buick Park Avenue |
| 1 | intake manifold exploded | 2001 Buick Regal |
| 17 | leaking coolant, intake manifold gasket failure | 2002 Buick Rendezvous |
| 1 | leaking intake manifold | 1994 Chevrolet 1500 Pickup |
| 6 | intake manifold leaked | 2000 Chevrolet Blazer |
| 1 | intake manifold gasket failure | 1998 Chevrolet Blazer |
| 1 | intake manifold failure | 1995 Chevrolet Blazer |
| 3 | leaking coolant, intake manifold gasket failure | 1995 Chevrolet Cavalier |
| 1 | leaking coolant, intake manifold gasket failure | 1996 Chevrolet Corsica |
| 1 | leaking coolant, intake manifold gasket failure | 1999 Chevrolet Express Van |
| 1 | coolant leaking from intake manifold | 1998 Chevrolet Express Van |
| 1 | intake manifold gasket failure | 2006 Chevrolet Impala |
| 2 | intake manifold gasket failure | 2005 Chevrolet Impala |
| 7 | intake manifold failure | 2003 Chevrolet Impala |
| 22 | intake manifold gasket failure | 2003 Chevrolet Impala |
| 114 | leaking coolant, intake manifold gasket failure | 2002 Chevrolet Impala |
| 25 | intake manifold gasket failure, coolant light is on | 2001 Chevrolet Impala |
| 3 | intake manifold gasket failure | 2000 Chevrolet Impala |
| 1 | intake manifold gasket | 2000 Chevrolet Lumina |
| 4 | intake manifold gasket leak | 1999 Chevrolet Lumina |
| 4 | intake manifold gasket leak | 1998 Chevrolet Lumina |
| 3 | leaking coolant, intake manifold gasket failure | 1997 Chevrolet Lumina |
| 2 | leaking coolant, intake manifold gasket failure | 1996 Chevrolet Lumina |
| 1 | intake manifold gasket leak | 2004 Chevrolet Malibu |
| 42 | leaking coolant, cracked intake manifold gasket | 2003 Chevrolet Malibu |
| 1 | intake manifold gasket failure | 2002 Chevrolet Malibu |
| 88 | leaking coolant, cracked intake manifold gasket | 2002 Chevrolet Malibu |
| 77 | leaking intake manifold gasket | 2001 Chevrolet Malibu |
| 48 | leaking coolant, defective intake manifold gasket | 2000 Chevrolet Malibu |
| 3 | cracked intake manifold | 1998 Chevrolet Malibu |
| 7 | intake manifold gasket failure, leaking coolant | 1998 Chevrolet Malibu |
| 14 | leaking coolant, intake manifold gasket failure | 1998 Chevrolet Malibu |
| 5 | intake manifold failure | 1997 Chevrolet Malibu |
| 1 | leaking coolant, intake manifold gasket failure | 1997 Chevrolet Malibu |
| 1 | intake manifold explosion | 2002 Chevrolet Monte Carlo |
| 1 | intake manifold leak | 2002 Chevrolet Monte Carlo |
| 3 | intake manifold exploded | 2001 Chevrolet Monte Carlo |
| 4 | intake manifold failure | 2001 Chevrolet Monte Carlo |
| 6 | leaking coolant, intake manifold gasket failure | 1999 Chevrolet Monte Carlo |
| 1 | intake manifold gasket leak | 1998 Chevrolet Monte Carlo |
| 4 | leaking coolant, intake manifold gasket failure | 1996 Chevrolet Monte Carlo |
| 1 | leaking intake manifold gasket | 2004 Chevrolet Silverado |
| 3 | leaking coolant, intake manifold gasket failure | 2000 Chevrolet Silverado |
| 1 | intake manifold leaking coolant | 1999 Chevrolet Suburban |
| 1 | manifold intake gasket leak | 1997 Chevrolet Suburban |
| 2 | intake manifold gasket failure, leaking coolant | 1996 Chevrolet Suburban |
| 1 | leaky intake manifold gasket | 2003 Chevrolet Trailblazer |
| 8 | defective lower intake manifold, leaking coolant | 2002 Chevrolet Venture |
| 4 | lower intake manifold gasket failed | 2002 Chevrolet Venture |
| 8 | intake manifold gasket failure | 2001 Chevrolet Venture |
| 3 | intake manifold gasket failure | 2000 Chevrolet Venture |
| 1 | intake manifold gasket failure | 1998 Chevrolet Venture |
| 3 | intake manifold cracked | 2000 Ford Crown Victoria |
| 1 | intake manifold cracked | 1998 Ford Crown Victoria |
| 2 | intake manifold gasket failure | 1998 Ford Crown Victoria |
| 2 | cracked intake manifold | 1997 Ford Crown Victoria |
| 4 | intake manifold coolant leak | 1996 Ford Crown Victoria |
| 3 | leaking coolant, cracked intake manifold | 1996 Ford Crown Victoria |
| 1 | leaking intake manifold | 2003 Ford Expedition |
| 2 | lower intake manifold gasket leaks | 2002 Ford Explorer Sport Trac |
| 1 | leaking coolant from intake manifold | 2001 Ford Mustang |
| 1 | plastic intake manifold cracked, leaking coolant | 1996 Ford Mustang |
| 2 | intake manifold melted | 2005 Ford Taurus |
| 1 | intake manifold cracked | 1999 Ford Windstar |
| 4 | intake manifold runner control faillure | 1998 Ford Windstar |
| 2 | coolant leak, intake manifold gasket failure | 1996 Ford Windstar |
| 1 | imrc / intake manifold runner control stuck open | 1996 Ford Windstar |
| 1 | intake manifold gasket failure | 1998 GMC Sierra 1500 |
| 1 | leaking coolant, intake manifold gasket failure | 1996 GMC Sierra 1500 |
| 1 | cracked intake manifold | 1999 Lincoln Town Car |
| 1 | plastic intake manifold developed a crack | 1998 Lincoln Town Car |
| 1 | intake manifold failure | 2000 Mercury Grand Marquis |
| 1 | cracked intake manifold | 1999 Mercury Grand Marquis |
| 1 | plastic intake manifold cracks | 1998 Mercury Grand Marquis |
| 8 | intake manifold failure | 1997 Mercury Grand Marquis |
| 1 | cracked intake manifold | 1996 Mercury Grand Marquis |
| 1 | intake manifold failure | 1996 Mercury Grand Marquis |
| 1 | overheating, plastic intake manifold leaking | 1996 Mercury Grand Marquis |
| 2 | power ring screw - damaged intake manifold | 2004 Nissan Altima |
| 13 | bad intake manifold gasket | 2001 Nissan Altima |
| 4 | intake manifold gasket cylinder | 2000 Nissan Altima |
| 2 | intake manifold gasket failure, leaking coolant | 2000 Nissan Altima |
| 63 | intake manifold gasket leak, car shakes | 2000 Nissan Altima |
| 5 | intake manifold gasket failure | 1999 Nissan Altima |
| 1 | intake manifold gasket failure | 1994 Nissan Altima |
| 6 | leaking from head and intake manifold gaskets | 2003 Oldsmobile Alero |
| 1 | intake manifold gasket failure | 2002 Oldsmobile Alero |
| 17 | leaking coolant, intake manifold gasket failure | 2001 Oldsmobile Alero |
| 5 | intake manifold gasket failure | 2000 Oldsmobile Alero |
| 2 | intake manifold gasket failure | 1997 Oldsmobile Cutlass |
| 1 | cracked intake manifold gasket | 2002 Oldsmobile Silhouette |
| 1 | intake manifold gasket failure | 2001 Oldsmobile Silhouette |
| 5 | intake manifold gasket failure | 1999 Oldsmobile Silhouette |
| 2 | failed intake manifold gaskets coolant leak in engine | 2003 Pontiac Aztek |
| 2 | leaking coolant, intake manifold gasket failure | 2003 Pontiac Aztek |
| 2 | blown intake manifold | 2001 Pontiac Aztek |
| 1 | intake manifold failure | 2002 Pontiac Bonneville |
| 1 | cracked intake manifold | 1998 Pontiac Bonneville |
| 6 | cracked intake manifold causing engine failure | 1998 Pontiac Bonneville |
| 6 | intake manifold leak | 1998 Pontiac Bonneville |
| 3 | cracked upper intake manifold | 1997 Pontiac Bonneville |
| 1 | leaking coolant, intake manifold gasket failure | 1996 Pontiac Bonneville |
| 2 | leaking coolant, intake manifold gasket failure | 1995 Pontiac Bonneville |
| 30 | leaking coolant, intake manifold gasket failure | 2003 Pontiac Grand Am |
| 20 | intake manifold gasket failure | 2002 Pontiac Grand Am |
| 40 | leaking coolant, cracked intake manifold gasket | 2001 Pontiac Grand Am |
| 17 | intake manifold gasket failure, coolant light is on | 2000 Pontiac Grand Am |
| 4 | intake manifold gaskets failure | 2000 Pontiac Grand Am |
| 4 | intake manifold gasket failure, leaking coolant | 1999 Pontiac Grand Am |
| 24 | intake manifold gasket leak | 1999 Pontiac Grand Am |
| 2 | intake manifold gasket failure | 1998 Pontiac Grand Am |
| 2 | leaking cooland, intake manifold gasket failure | 1998 Pontiac Grand Am |
| 8 | intake manifold gasket failure | 1997 Pontiac Grand Am |
| 2 | intake manifold gasket failure | 1996 Pontiac Grand Am |
| 1 | intake manifold leak | 2003 Pontiac Grand Prix |
| 14 | leaking coolant, cracked intake manifold gasket | 2002 Pontiac Grand Prix |
| 3 | intake manifold failure | 2001 Pontiac Grand Prix |
| 3 | intake manifold gasket failure | 2000 Pontiac Grand Prix |
| 14 | leaking coolant, cracked intake manifold gasket | 1999 Pontiac Grand Prix |
| 8 | leaking coolant, cracked intake manifold | 1998 Pontiac Grand Prix |
| 4 | overheating due to cracked intake manifold | 1998 Pontiac Grand Prix |
| 3 | leaking coolant, intake manifold gasket failure | 1997 Pontiac Grand Prix |
| 1 | leaking coolant, intake manifold gasket failure | 1996 Pontiac Grand Prix |
| 1 | intake manifold failure | 1994 Pontiac Grand Prix |
| 14 | intake manifold gasket failure | 2002 Pontiac Montana |
| 4 | leaking coolant, intake manifold gasket failure | 2001 Pontiac Montana |
| 8 | leaking coolant, intake manifold gasket failure | 2000 Pontiac Montana |
| 22 | intake manifold gasket failure | 1999 Pontiac Montana |
| 4 | leaking coolant, intake manifold gasket failure | 1998 Pontiac Montana |
| 3 | intake manifold gasket failure | 1998 Pontiac Transport |
| 2 | leaking coolant, cracked intake manifold gasket | 1997 Pontiac Transport |
| 1 | overheating, intake manifold gasket failure | 1996 Pontiac Transport |
| 4 | knocking noise from intake manifold | 2003 Toyota Camry |
| 1 | faulty intake manifold runner control motor | 2006 Volkswagen Jetta |