Look over what I have let me know if I messed up on it and need help on 1988 to 1991 changes in the R&V series trucks.
C vs K or say what!
Chevrolet had produced pickup trucks since 1918, the use of the C/K in a truck's name didn't begin until 1962. Chevrolet offered several models in both two and four-wheel drive. The two-wheel-drive versions had the "C" prefix and came in the half-ton C10 and C15 (a long bed), the three-quarter-ton C20 and the one-ton C30. Four-wheel-drive models had a "K" prefix and were called K10, K15 and K20. There was no four-wheel-drive version of the one-ton pickup and hence no K30. GMC models were called 1000/K1000, 1500/K1500 and 2500, with the K signifying four-wheel drive.
1969 Chevrolet introduced the Four wheel drive Blazer Sport Utility Vehicle.
A trio of new V8s were available; a pair of 350s with either 300 or 350 horsepower and a 396 with 310 horsepower but more torque than the smaller V8s. GMC introduced a Super Custom model with slightly upgraded interior and exterior trim.
1970 was very similar to the 1969. Grill is similar to 1969, except the plastic insert now consists of twelve groups of four short horizontal fins arranged with six stacks of fins above the center bar and six stacks below. First year for the optional 402 ci. engine.
Chevrolet introduced a few new options such as a tilt steering wheel and a stereo with eight-track player. And, for the first time, the newly available three-speed automatic transmission.
First year for the GMC Jimmy
1971 was similar to previous years. The redesigned grill now consists of large anodized aluminum surrounding entire grill area with a rectangular pattern insert. The Bowtie emblem is mounted in center of grill. GMC also has a slightly redesigned grill. First year for front wheel disc brakes.
New trim level names debuted, Custom (the base), the mid-level Custom Deluxe (formerly the Custom) and the Cheyenne (formerly the Custom Sport Truck).. The park lamps are now mounted in front bumper. This was the last year for the inside mirror bracket to be screwed above windshield.
1972 Chevrolet ended one of the most popular body style trucks in American history.(IMHO) 1972's are very difficult to distinguish from the prior year without checking serial numbers. One noticeable change is the inside rear view mirror is now glued to the windshield like modern day vehicles. Some new interior changes were also added, such as molded door panels and an optional frabic Highlander seat trim.
Starting in 1973 Chevrolet introduced major changes on its C/K Series trucks. The most notable changes were to the body. These trucks featured a completely restyled and "rounded" body style with an "egg crate grill”, curved side glass, doors that opened to the roof line, and the elimination of roof drip rails.
It also featured a wider interior with larger seats, and flow through ventilation directed through louvers located behind the hood. The redesigned interior featured a dash angled slightly toward the driver. A full-time four-wheel-drive system was available.
Trim levels remained the same as before, and engine choices ranged from a 100-horsepower 250-cubic-inch inline six to a 240-horse 454 V8. 1973 also saw the introduction of the 1 ton crew cab (four door) pickup.
1974 was virtually unchanged from the previous model. Interior included foam instrument panel padding, an energy absorbing steering column, and on all models with automatic transmission, an anti-theft ignition system was used. Exterior changes were highlighted by four new colors, improved below-eye-line mirror, and new optional bright roof drip moldings.
Full-time 4WD was available on all V8 models. New braking system sounded an audible signal with the pads needed replacement.
1975 Chevrolet trucks received new, revamped grille with a larger grillwork, clear parking light lenses, and new front fender model identification combination model nameplates and series identification plaques. Restyled tailgate with a quick-release control.
Trim levels were changed and now consisted of (base)Custom Deluxe, Scottsdale had cloth seats and chrome exterior trim, Cheyenne came with added insulation and exterior brightwork and the Silverado came with woodgrain interior accents, carpeting and additional exterior accents including wheel-lip moldings. Corresponding GMC trim levels were, in ascending order, Sierra, Sierra Grande, High Sierra and Sierra Classic.
First year catalytic converters were standard equipment on all trucks under 6,001 gross vehicle weight (GVW).
Introduction of the high-energy system (HEI) which delivered a hotter and more consistent spark for better starting power.
1976 The Blazer gets a new body design with a metal roof over the front seats and an optional removable fiberglass roof shell over the rear seats and cargo area. Also now equipped with an integrated roll bar. On 1976 pickups the grill texture was changed slightly, and the engine call-out badges were removed from within the grill.
GM Debuted The Blazer/Jimmy as a camper called Chalet/Casa Grande
1977 is the first year trucks were offered with power door locks and rear defroster. Also the one-ton truck became available in a four-wheel-drive version (K30). A few cosmetic changes and upgrades took place; the grill insert was changed from 32 small rectangles to 15 larger ones.
A Sport package became available and featured a black grill, multi-tone striping, color-keyed bumpers, rally wheels and white-lettered tires.. The first year for inside hood release.
Last year GM Offered The Blazer/Jimmy as a camper called Chalet/Casa Grande
1978marked the introduction of the 350-cubic-inch V8 diesel that was optional on the C10 two-wheel-drive pickup. Playing catch-up to the Sport package offered on the Chevy pickups the year before, GMC brought out a very similar package, called the Street Coupe. GMC also introduced a Desert Fox package (for four-wheel-drive trucks) that featured a front brush guard, a bed-mounted rollbar with lights, sporty wheels and tape-striping job over most of the body..
1979 Chevrolet Light duty trucks got a new front end with integral park/head lights, a bright metal lower grill outline molding, and a new paint scheme for the grill. The 1979 grill was slightly narrower top to bottom, but of the same basic design as the previous years style. Catalytic converter now added to trucks up to 8,500 gross vehicle weight (GVW).
1980 The same 1979 grill was used on the conventional trucks but Silverados got new square headlamps. Seat back angle was changed for greater comfort. New thermostatic-controlled cooling fan. Single inlet dual exhaust system was new for the 292 six cylinder engine.
1981 Sawnew, more aerodynamic sheetmetal from the windshield forward. The new fenders flanked a restyled grill (It had a wide center horizontal molding that was brightly finished with a bowtie in the center) with square headlamps (on all models). The Lighter materials helped GM’s Fuel Efficiency ratings by reducing the weight from 100 to 300 pounds, depending on the model.
A revised interior featured a new instrument panel, seats and door trim. A new 305-cubic-inch V8 with Electronic Spark Control debuted. The spark control allowed higher compression and power output (160 horsepower) that was equal to or better than the available 350 V8s, with the advantage of better fuel economy. Still offered were the inline sixes (250 and 292 c.i.), a couple of 350-cubic-inch V8s and the stout 454-cubic-inch V8.
Four wheel drive received improvements (from GM) by way of auto-locking hubs and the introduction of quad shocks.
1982 models were essentially carbon copies of the 1981 models except a chrome grill was standard on all models. A new 6.2-liter (Chevrolet started using metric engine sizes at this point) diesel engine debuted. A much stronger and more reliable engine than the old 5.7-liter (350 c.i.) version, the 6.2 was offered on the four-wheel-drive (K) pickups, as opposed to the 5.7, which was available only on two-wheel-drive (C) pickups. A four-speed automatic gearbox was a new option that promoted less engine wear and better highway fuel economy than the earlier three-speeds.
The Cheyenne trim level was dropped, leaving the Custom Deluxe, Scottsdale and Silverado. Likewise, GMC dropped the High Sierra. Hood ornaments appear on the trucks. Chevrolet became #1 in truck sales!
Note: Chevrolet brought out its compact S-10 Blazer in the Fall of 1982 as a 1983
1983 A revised grill treatment and parking lamp placement. The grill featured a black out look and the parking lights were moved from the bumper to the bottom of the grill. Additional rust protection was provided by the use of anti-corrosion steel under the hood and at the front of the pickup box. The automatic 700R4 transmission is offered as an option.
1984 New grill design, used on both Blazers and Pickups, that had a bi-level design with three black-finished horizontal bars or bright-plated bars, square headlamps in both sections (optional), parking lamps behind the bars on the bottom, and a yellow bowtie on the body color strip in the middle. New for the year were two galvanized steel interior door panels for better rust protection.
Interior received changes to the wiper controls and the integration of the high beam lights and cruise control being moved to turn signal stalk. Chevrolet contracts to deliver 30,000 K-series trucks and 23,000 Blazers to the U.S. Army.
1985 The full sized Blazers and pickups had a wider body color panel between the upper and lower grill, and the grille had only a single horizontal bar intersected by seven vertical bars. A new custom two-tone paint treatment used as the secondary color above the beltline on the Fleetside box, on the rear of the cab, doors, and fender sides. Introduction of the 4.3-literVortec V-6 engine.
1986 Last of the Chevrolet truck engines to be equipped with carburetors. Also dubbed official truck of the Indy 500 alongside the Corvette pace car.
Where is my K?
1987After decades of using the C and K nomenclature, Chevrolet revised its trucks' designations, changing the two-wheel-drive truck's "C" to an "R" and the four-wheel-drive truck's "K" to a "V.". Trucks in larger weight classes as well as Suburbans and Blazers retained the "C/K" look.
The debut of throttle-body fuel injection (TBI) for all V6 and V8 engines. As a result, the 5.0-liter (305 c.i.) and 5.7-liter (350 c.i.) V8s were more powerful, kicking out 170 and 210 horsepower, respectively.
1988
1989
1990
1991
C vs K or say what!
Chevrolet had produced pickup trucks since 1918, the use of the C/K in a truck's name didn't begin until 1962. Chevrolet offered several models in both two and four-wheel drive. The two-wheel-drive versions had the "C" prefix and came in the half-ton C10 and C15 (a long bed), the three-quarter-ton C20 and the one-ton C30. Four-wheel-drive models had a "K" prefix and were called K10, K15 and K20. There was no four-wheel-drive version of the one-ton pickup and hence no K30. GMC models were called 1000/K1000, 1500/K1500 and 2500, with the K signifying four-wheel drive.
1969 Chevrolet introduced the Four wheel drive Blazer Sport Utility Vehicle.
A trio of new V8s were available; a pair of 350s with either 300 or 350 horsepower and a 396 with 310 horsepower but more torque than the smaller V8s. GMC introduced a Super Custom model with slightly upgraded interior and exterior trim.
1970 was very similar to the 1969. Grill is similar to 1969, except the plastic insert now consists of twelve groups of four short horizontal fins arranged with six stacks of fins above the center bar and six stacks below. First year for the optional 402 ci. engine.
Chevrolet introduced a few new options such as a tilt steering wheel and a stereo with eight-track player. And, for the first time, the newly available three-speed automatic transmission.
First year for the GMC Jimmy
1971 was similar to previous years. The redesigned grill now consists of large anodized aluminum surrounding entire grill area with a rectangular pattern insert. The Bowtie emblem is mounted in center of grill. GMC also has a slightly redesigned grill. First year for front wheel disc brakes.
New trim level names debuted, Custom (the base), the mid-level Custom Deluxe (formerly the Custom) and the Cheyenne (formerly the Custom Sport Truck).. The park lamps are now mounted in front bumper. This was the last year for the inside mirror bracket to be screwed above windshield.
1972 Chevrolet ended one of the most popular body style trucks in American history.(IMHO) 1972's are very difficult to distinguish from the prior year without checking serial numbers. One noticeable change is the inside rear view mirror is now glued to the windshield like modern day vehicles. Some new interior changes were also added, such as molded door panels and an optional frabic Highlander seat trim.
Starting in 1973 Chevrolet introduced major changes on its C/K Series trucks. The most notable changes were to the body. These trucks featured a completely restyled and "rounded" body style with an "egg crate grill”, curved side glass, doors that opened to the roof line, and the elimination of roof drip rails.
It also featured a wider interior with larger seats, and flow through ventilation directed through louvers located behind the hood. The redesigned interior featured a dash angled slightly toward the driver. A full-time four-wheel-drive system was available.
Trim levels remained the same as before, and engine choices ranged from a 100-horsepower 250-cubic-inch inline six to a 240-horse 454 V8. 1973 also saw the introduction of the 1 ton crew cab (four door) pickup.
1974 was virtually unchanged from the previous model. Interior included foam instrument panel padding, an energy absorbing steering column, and on all models with automatic transmission, an anti-theft ignition system was used. Exterior changes were highlighted by four new colors, improved below-eye-line mirror, and new optional bright roof drip moldings.
Full-time 4WD was available on all V8 models. New braking system sounded an audible signal with the pads needed replacement.
1975 Chevrolet trucks received new, revamped grille with a larger grillwork, clear parking light lenses, and new front fender model identification combination model nameplates and series identification plaques. Restyled tailgate with a quick-release control.
Trim levels were changed and now consisted of (base)Custom Deluxe, Scottsdale had cloth seats and chrome exterior trim, Cheyenne came with added insulation and exterior brightwork and the Silverado came with woodgrain interior accents, carpeting and additional exterior accents including wheel-lip moldings. Corresponding GMC trim levels were, in ascending order, Sierra, Sierra Grande, High Sierra and Sierra Classic.
First year catalytic converters were standard equipment on all trucks under 6,001 gross vehicle weight (GVW).
Introduction of the high-energy system (HEI) which delivered a hotter and more consistent spark for better starting power.
1976 The Blazer gets a new body design with a metal roof over the front seats and an optional removable fiberglass roof shell over the rear seats and cargo area. Also now equipped with an integrated roll bar. On 1976 pickups the grill texture was changed slightly, and the engine call-out badges were removed from within the grill.
GM Debuted The Blazer/Jimmy as a camper called Chalet/Casa Grande
1977 is the first year trucks were offered with power door locks and rear defroster. Also the one-ton truck became available in a four-wheel-drive version (K30). A few cosmetic changes and upgrades took place; the grill insert was changed from 32 small rectangles to 15 larger ones.
A Sport package became available and featured a black grill, multi-tone striping, color-keyed bumpers, rally wheels and white-lettered tires.. The first year for inside hood release.
Last year GM Offered The Blazer/Jimmy as a camper called Chalet/Casa Grande
1978marked the introduction of the 350-cubic-inch V8 diesel that was optional on the C10 two-wheel-drive pickup. Playing catch-up to the Sport package offered on the Chevy pickups the year before, GMC brought out a very similar package, called the Street Coupe. GMC also introduced a Desert Fox package (for four-wheel-drive trucks) that featured a front brush guard, a bed-mounted rollbar with lights, sporty wheels and tape-striping job over most of the body..
1979 Chevrolet Light duty trucks got a new front end with integral park/head lights, a bright metal lower grill outline molding, and a new paint scheme for the grill. The 1979 grill was slightly narrower top to bottom, but of the same basic design as the previous years style. Catalytic converter now added to trucks up to 8,500 gross vehicle weight (GVW).
1980 The same 1979 grill was used on the conventional trucks but Silverados got new square headlamps. Seat back angle was changed for greater comfort. New thermostatic-controlled cooling fan. Single inlet dual exhaust system was new for the 292 six cylinder engine.
1981 Sawnew, more aerodynamic sheetmetal from the windshield forward. The new fenders flanked a restyled grill (It had a wide center horizontal molding that was brightly finished with a bowtie in the center) with square headlamps (on all models). The Lighter materials helped GM’s Fuel Efficiency ratings by reducing the weight from 100 to 300 pounds, depending on the model.
A revised interior featured a new instrument panel, seats and door trim. A new 305-cubic-inch V8 with Electronic Spark Control debuted. The spark control allowed higher compression and power output (160 horsepower) that was equal to or better than the available 350 V8s, with the advantage of better fuel economy. Still offered were the inline sixes (250 and 292 c.i.), a couple of 350-cubic-inch V8s and the stout 454-cubic-inch V8.
Four wheel drive received improvements (from GM) by way of auto-locking hubs and the introduction of quad shocks.
1982 models were essentially carbon copies of the 1981 models except a chrome grill was standard on all models. A new 6.2-liter (Chevrolet started using metric engine sizes at this point) diesel engine debuted. A much stronger and more reliable engine than the old 5.7-liter (350 c.i.) version, the 6.2 was offered on the four-wheel-drive (K) pickups, as opposed to the 5.7, which was available only on two-wheel-drive (C) pickups. A four-speed automatic gearbox was a new option that promoted less engine wear and better highway fuel economy than the earlier three-speeds.
The Cheyenne trim level was dropped, leaving the Custom Deluxe, Scottsdale and Silverado. Likewise, GMC dropped the High Sierra. Hood ornaments appear on the trucks. Chevrolet became #1 in truck sales!
Note: Chevrolet brought out its compact S-10 Blazer in the Fall of 1982 as a 1983
1983 A revised grill treatment and parking lamp placement. The grill featured a black out look and the parking lights were moved from the bumper to the bottom of the grill. Additional rust protection was provided by the use of anti-corrosion steel under the hood and at the front of the pickup box. The automatic 700R4 transmission is offered as an option.
1984 New grill design, used on both Blazers and Pickups, that had a bi-level design with three black-finished horizontal bars or bright-plated bars, square headlamps in both sections (optional), parking lamps behind the bars on the bottom, and a yellow bowtie on the body color strip in the middle. New for the year were two galvanized steel interior door panels for better rust protection.
Interior received changes to the wiper controls and the integration of the high beam lights and cruise control being moved to turn signal stalk. Chevrolet contracts to deliver 30,000 K-series trucks and 23,000 Blazers to the U.S. Army.
1985 The full sized Blazers and pickups had a wider body color panel between the upper and lower grill, and the grille had only a single horizontal bar intersected by seven vertical bars. A new custom two-tone paint treatment used as the secondary color above the beltline on the Fleetside box, on the rear of the cab, doors, and fender sides. Introduction of the 4.3-literVortec V-6 engine.
1986 Last of the Chevrolet truck engines to be equipped with carburetors. Also dubbed official truck of the Indy 500 alongside the Corvette pace car.
Where is my K?
1987After decades of using the C and K nomenclature, Chevrolet revised its trucks' designations, changing the two-wheel-drive truck's "C" to an "R" and the four-wheel-drive truck's "K" to a "V.". Trucks in larger weight classes as well as Suburbans and Blazers retained the "C/K" look.
The debut of throttle-body fuel injection (TBI) for all V6 and V8 engines. As a result, the 5.0-liter (305 c.i.) and 5.7-liter (350 c.i.) V8s were more powerful, kicking out 170 and 210 horsepower, respectively.
1988
1989
1990
1991
Last edited:
) etc etc. Or the diesel red-headed bastard stepchild (the Olds 350, only in C10's in a few years on prime-numbered Tuesdays) versus the 6.2 ... 
...also had a '71 CST Blazer with a tach dash and factory SM465 I never should have sold too...
