88-98 model year differences?
 

I'm a 73-87 guy, and i know a good amount about them. But I know nothing about 88-98. Anybody got a link to a site that has this run of trucks broken down by year? I'm just kinda bored, cruising the forums. :bowtie:

Here is what I can think of off the top of my head


88-new body style
89-
90- Composite headlight replace dual sealed beams
91-
92-
93-
94- New grille treatment for GMC and Chevy, Third brake light added, cargo lamp becomes standard.
95- New ext. mirrors, completely redesigned interior, driver's side airbag, cd player first available as option.
96- 3rd door ext. cab option, Vortec CPFI introduced, adjustable seatbelts, Push-button 4x4 optional, alloy wheel center caps change to flat stye (no lugs)
97-passenger airbag introduced, Variable speed assist steering, enhanced cooling for 6.5L TD
98- Revised driver's airbag and steering wheel, PASSLOCK II system shows up

What is the passlock II system?

90 the interior door panels were changed and the bench seats had an arm rest added to them, the buckets went from low back to high back.

92 bucket changed again to a wider seat with an armrest.

93 the seats came with headrests, cup holders on dash, and also the ac controls had a rec button.

Tahoes and suburbans carried on fron 92-99 - no changes were made from 98-99(some were rebadged unsold 98s) Trucks got NBS in 99.

passlock is the GM passive anti theft system. you know, the resister in the key? thats part of the system

PASSLOCK uses the resistor in the key, but PASSLOCK II loactes the resistor in the ignition key cylinder. It only sends the correct signal when the correct key is entered into the cylinder.