- The sporty F-body Firebird had 17 major changes and engineering highlights for 1988.
- Base models shared an improved Tuned Port Induction (TPI) system on V-8 engines, which also had new serpentine accessory belt drives.
- Base model features:
- standard 15x7 in. deep-dish Hi-Tech Turbo or diamond spoke aluminum wheels
- a redesigned four-spoke steering wheel
- an AM/FM stereo with seek-and-scan and clock
- Pallex cloth interior trim
- a new Camel colored interior
- monotone paint treatments
- a choice of two new exterior colors (Silver Blue Metallic or Orange Metallic)
- Formulas had new 16x8 in. Hi-Tech Turbo cast-aluminum wheels and a new 5.0-liter throttle-body-injection (TBI) V-8 engine that was also standard in the Trans Am.
- All TPI 5.0-liter and 5.7-liter engines now came with full-gauge analog clusters and a 140-mph speedometer.
- New features for GTA models included:
- a remote deck lid release
- a power antenna
- a right-hand visor-vanity mirror
- power windows
- power door locks
- body side moldings
- air conditioning
- tinted glass
- a lamp group
- the Pass Key theft deterrent system
- controlled-cycle wipers
- a rear window defogger
- cruise control
- tilt steering
- an AM/FM stereo with cassette and graphic equalizer
- steering wheel-mounted radio controls
- integral rear seat headrests
- Metrix cloth interior trim (optional for the Trans Am)
- In addition, leather-trimmed articulating front bucket seats were a new GTA model option.
- Base Firebirds featured:
- a 2.8-liter MFI V-6
- a center high-mounted stop lamp
- complete analog instrumentation
- a full-length console with instrument panel
- side window defoggers
- a front air dam
- the GM Computer Command Control system
- a hatch "pull-down" feature
- rectangular-shaped concealed quartz halogen headlights
- monochromatic paint
- a UM7 Delco ETR AM/FM stereo
- cloth reclining front bucket seats
- a folding rear seat
- a four-spoke steering wheel
- a lockable storage compartment
- P215/65R15 BSW tires
- a five-speed manual transmission
- "wet-arm" cast-aluminum wheels
- Formulas added or substituted:
- a 5.0-liter EFI V-8
- a body-color aero rear deck lid spoiler
- a domed hood
- Formula graphics
- 16x8-in. Hi-Tech aluminum wheels
- the WS6 special performance suspension
- two-tone paint and striping
- Trans-Ams added or substituted:
- a body aero package
- hood and front fender air extractors
- hood air louvers
- fog lamps
- soft ray tinted glass
- the Y99 Rally Tuned suspension
- GTAs added:
- the 5.7-liter TPI V-8
- four wheel disc brakes
- air conditioning
- cruise control
- dual power mirrors
- power articulating front bucket seats
- power deck lid release
- power door locks
- power windows
- a Delco UT4 ETA "touch control" AM/FM stereo with cassette and anti-theft feature
- a special performance suspension
- a leather-wrapped steering wheel
- steering wheel radio controls
- P245/50VR16 Goodyear Eagle tires
- a four-speed automatic transmission
- 16 x 8-in. gold-colored light-weight diamond-spoke aluminum wheels
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