Rick's Free Auto Repair Advice

Pontiac Bumper Material and Bumper Repair

Pontiac Bumper Material and Bumper Repair

Polyurethane (PUR), Reaction Injection Molding (RIM), Reinforced reaction injection molding (RRIM), Thermoset polyurethane — Most common on domestic vehicles. Yellow or grey in color. Bubbles and smokes when you attempt to melt. Thermo-set PUR sands powdery and can be smoothed with a grinder as long as you don’t use high pressure or high speed that causes the plastic to liquefy.

PUR and most thermo-set plastics are repaired by heat fusing and grinding a “V” groove and filling with urethane filler material and structural support (stainless steel screen) to the backside of the cracked material.

Thermoplastic Olefin (TPO), Thermo-Elastic Olefin (TEO)— TPO and TEO are a combination of polypropylene, an elastomer or rubber, and a mineral filler such as calcium carbonate or talc.

TPO bumper material sands in chunks melts like butter with high-speed grinders, feels like wax and gets stringy when hot, so keep this in mind when trying sand or grind a TPO bumper cover.

TPO bumper covers are the most difficult to repair because they contain 3% to 5% wax-based mold release within the material. The embedded wax makes it difficult for filler, adhesive, primer and paint to stick. Body shops prefer to discard a TPO bumper because the repair is so difficult

However, TPO IS repairable as long as you know how to prepare it. You must use a cleaner and adhesion promoter prior to adding any filler material.

Thermoplastic Poly Propylene— PP is semi-flexible, melts & smears when grinding, waxy or greasy feel. Repaired by heat fusing and grinding a “V” groove and filling with polypropylene filler material and structural support (stainless steel screen) to the backside of the cracked material.

Aztek base; lower (2001) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Aztek lower; base model (2001) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Aztek lower; GT (2001) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Aztek upper (2001-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Aztek lower; paint to match (2001-2005) Front Bumper PP (Polypropylene)
Aztek GT; lower (2001) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville GXP (2004-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SE (2002-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SLE/SSEi (2000-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SE (2000-2001) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SSE/SSEi (1996-1999) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SSE/SSEi; w/o headlamp washer (1995) Front Bumper Bexloy V
Bonneville SSE/SSEi (1995) Front Bumper Bexloy V
Bonneville SSE/SSEi; w/headlamp washer (1992-1994) Front Bumper TPE
Bonneville SE (1992-1995) Front Bumper PUR or RIM (Urethane)
Bonneville SLE/SSEi (2005) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville GXP (2004-2005) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SE (2002-2005) Rear Bumper PP (Polypropylene)
Bonneville SLE/SSEi; w/word BONNEVILLE molded in bumper (2000-2004) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SSE/SSEi (1996-1999) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Bonneville SE (1996-1999) Rear Bumper PUR or RIM (Urethane)
Bonneville SSE/SSEi (1992-1995) Rear Bumper Bexloy V
Bonneville SE (1992-1995) Rear Bumper PUR or RIM (Urethane)
Firebird except Trans Am (1998-2002) Front Bumper PUR or RIM (Urethane)
Firebird Trans Am/Trans Am GT (1998-2002) Front Bumper PUR or RIM (Urethane)
Firebird except Trans Am (1993-1997) Front Bumper PUR or RIM (Urethane)
Firebird Trans Am/Trans Am GT (1993-1997) Front Bumper PUR or RIM (Urethane)
Firebird w/o fog lamps; Trans Am/Aero (1991-1992) Front Bumper PUR or RIM (Urethane)
Firebird Trans Am (1985-1990) Front Bumper PUR or RIM (Urethane)
Firebird SE (1985-1990) Front Bumper PUR or RIM (Urethane)
Firebird Formula (1985-1990) Front Bumper PUR or RIM (Urethane)
Firebird std (1985-1990) Front Bumper PUR or RIM (Urethane)
Firebird Trans Am/Trans Am GT (1993-2002) Rear Bumper PUR or RIM (Urethane)
Firebird Firebird/Formula (1993-2002) Rear Bumper PUR or RIM (Urethane)
Firebird except Trans Am (1982-1990) Rear Bumper PUR or RIM (Urethane)
Firefly (1998-2000) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Firefly 4dr sedan (1995-1997) Rear Bumper PP (Polypropylene)
Firefly 2dr hatchback (1995-1997) Rear Bumper PP (Polypropylene)
G3 Sedan (2009-2010) Front Bumper PP (Polypropylene)
G5 base model (2007-2009) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
G5 G5 PURSUIT; BASE|SE (2006-2010) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
G5 G5 PURSUIT; BASE|SE (2006-2008) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
G6 BASE|GT|VALUE LEADER; w/o CTF Pkg; w/o Sport Pkg (2005-2009) Front Bumper TPO or TEO (Thermo Plastic Olefin)
G6 BASE|GT; Sedan; Interim Sales Pkg (CTF) (2009-2010) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
G6 GXP; Sedan (2008-2009) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
G6 Coupe/Conv; w/o CTF Pkg; w/o Sport Pkg (2006-2009) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
G6 4dr sedan (2005-2009) Rear Bumper PP (Polypropylene)
G8 GXP (2009) Front Bumper PP (Polypropylene)
G8 (2008-2009) Front Bumper TPO or TEO (Thermo Plastic Olefin)
G8 (2008-2009) Rear Bumper PP (Polypropylene)
Grand Am SE (2003-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Am SE (1999-2002) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Am GT (1999-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Am SE (1996-1998) Front Bumper PUR or RIM (Urethane)
Grand Am GT (1996-1998) Front Bumper PUR or RIM (Urethane)
Grand Am GT (1992-1995) Front Bumper PUR or RIM (Urethane)
Grand Am SE (1992-1995) Front Bumper PUR or RIM (Urethane)
Grand Am SE (1999-2002) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Am GT (1999-2005) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Am GT (1996-1998) Rear Bumper PUR or RIM (Urethane)
Grand Am SE (1996-1998) Rear Bumper PUR or RIM (Urethane)
Grand Am SE (1992-1995) Rear Bumper PUR or RIM (Urethane)
Grand Am GT (1992-1995) Rear Bumper PUR or RIM (Urethane)
Grand Prix lower filler; except GXP (2004-2008) Front Bumper PP (Polypropylene)
Grand Prix GT|GTP; SE/2nd design (1997-2003) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Prix SE; w/custom bumper (1997-2001) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Prix SE; first design (1997-2000) Front Bumper PUR or RIM (Urethane)
Grand Prix 2dr coupe; w/Sports pkg (B4U) (1994-1996) Front Bumper PUR or RIM (Urethane)
Grand Prix 4dr sedan; w/o center light (1992-1993) Front Bumper PUR or RIM (Urethane)
Grand Prix 4dr sedan; LE (1991) Front Bumper PUR or RIM (Urethane)
Grand Prix 2dr coupe; w/Sports pkg (B4U) (1991-1993) Front Bumper PUR or RIM (Urethane)
Grand Prix 4dr sedan; LE; w/o Sport (1990) Front Bumper PUR or RIM (Urethane)
Grand Prix 4dr sedan; LE; w/Sport (1990) Front Bumper PUR or RIM (Urethane)
Grand Prix 2dr coupe; std/LE; w/o Turbo (1988-1990) Front Bumper PUR or RIM (Urethane)
Grand Prix 2dr coupe; SE; w/o Turbo (1988-1990) Front Bumper PUR or RIM (Urethane)
Grand Prix GXP (2005-2008) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Prix SE (1997-2003) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Prix Sport/GT/GTP (1997-2003) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Grand Prix 2dr coupe; Turbo/Sports pkg (B4U) (1994-1996) Rear Bumper PUR or RIM (Urethane)
Grand Prix 2dr coupe; std/LE/SE/GT (1991-1996) Rear Bumper PUR or RIM (Urethane)
Grand Prix 4dr sedan; w/custom bumper (1990-1991) Rear Bumper PUR or RIM (Urethane)
Grand Prix 4dr sedan; w/o custom bumper (1990-1996) Rear Bumper PUR or RIM (Urethane)
Grand Prix 2dr coupe; Turbo/Sports pkg (B4U) (1989-1993) Rear Bumper PUR or RIM (Urethane)
Grand Prix 2dr coupe; except Turbo/Sports pkg (B4U) (1988-1990) Rear Bumper PUR or RIM (Urethane)
GTO (2004-2006) Front Bumper PP (Polypropylene)
GTO (2005-2006) Rear Bumper PP (Polypropylene)
GTO (2004) Rear Bumper PP (Polypropylene)
Montana except SV6 (2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Montana SV6; w/121″ wheelbase; U.S. market; upper (2005-2009) Front Bumper PP (Polypropylene)
Montana (2001-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Montana SV6; w/121 inch wheelbase; U.S. market; w/park sensor (2005-2006) Rear Bumper PP (Polypropylene)
Montana w/113″ wheel base (2005-2009) Rear Bumper PP (Polypropylene)
Montana SV6; w/121 inch wheelbase; U.S. market; w/o park sensor (2005-2006) Rear Bumper PP (Polypropylene)
Montana w/120 inch wheelbase; w/o back up sensor (2001-2005) Rear Bumper PUR or RIM (Urethane)
Montana w/120 inch wheelbase; w/back up sensor (2001-2005) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Solstice (2006-2010) Front Bumper PP (Polypropylene)
Solstice GXP model (2006-2010) Front Bumper PP (Polypropylene)
Solstice BASE (2006-2010) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Sunbird w/o hidden headlamps (1991-1994) Front Bumper PUR or RIM (Urethane)
Sunbird w/hidden headlamps (1990-1994) Front Bumper PUR or RIM (Urethane)
Sunbird w/o hidden headlamps (1989-1990) Front Bumper PUR or RIM (Urethane)
Sunbird except wagon; SE; w/o Sport pkg (1993-1994) Rear Bumper PUR or RIM (Urethane)
Sunbird except wagon; SE; w/Sport pkg (1993-1994) Rear Bumper PUR or RIM (Urethane)
Sunbird except wagon; SE (1992) Rear Bumper PUR or RIM (Urethane)
Sunbird except wagon; GT (1991-1993) Rear Bumper PUR or RIM (Urethane)
Sunbird 4dr wagon (1988-1994) Rear Bumper PUR or RIM (Urethane)
Sunbird except wagon; LE (1988-1994) Rear Bumper PUR or RIM (Urethane)
Sunfire (2003-2005) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Sunfire w/o GT pkg (2000-2002) Front Bumper PUR or RIM (Urethane)
Sunfire w/GT pkg (2000-2002) Front Bumper PUR or RIM (Urethane)
Sunfire w/o GT pkg (1995-1999) Front Bumper PUR or RIM (Urethane)
Sunfire 4dr sedan; w/filler panel to lamps (2001-2005) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Sunfire 4dr sedan; requires trimming to fit (2000-2005) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Sunfire 2dr coupe/conv (2000-2002) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Sunfire 4dr sedan; w/o filler panel (2000) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Sunfire 2dr coupe; except GT (1995-1999) Rear Bumper PUR or RIM (Urethane)
Sunfire convertible (1995-1999) Rear Bumper PUR or RIM (Urethane)
Tempest (1987-1991) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Tempest (1987-1991) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Torrent Upper; w/o GXP (2006-2009) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Torrent w/o GXP; upper (2006-2009) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Trans Sport (1994-1996) Front Bumper PUR or RIM (Urethane)
Trans Sport (1990-1993) Front Bumper PUR or RIM (Urethane)
Trans Sport (1990-1993) Rear Bumper PUR or RIM (Urethane)
Vibe GT (2009-2010) Front Bumper PP (Polypropylene)
Vibe BASE/AWD (2009-2010) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Vibe Lower; w/Sport Pkg (2005-2008) Front Bumper PP (Polypropylene)
Vibe Upper; w/o Appearance Pkg (2005-2008) Front Bumper PP (Polypropylene)
Vibe (2005-2008) Front Bumper PP (Polypropylene)
Vibe upper (2003-2004) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Vibe lower; smooth finish (2003-2004) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Vibe lower; gray textured finish (2003-2004) Front Bumper TPO or TEO (Thermo Plastic Olefin)
Vibe BASE/AWD (2009-2010) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Vibe smooth finish (2003-2008) Rear Bumper PP (Polypropylene)
Vibe gray textured finish (2003-2008) Rear Bumper PP (Polypropylene)
Wave Sedan (2007-2008) Front Bumper PP (Polypropylene)
Wave Sedan (2005-2006) Rear Bumper TPO or TEO (Thermo Plastic Olefin)
Wave H/B (2005-2008) Rear Bumper PP (Polypropylene)

Posted on by Rick Muscoplat



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