Service Specifications

SYSTEM REFRIGERANT CAPACITIES

Application		Ounces
Blazer & Pickups		44
"S" Blazer & Pickup		40
Suburban
Front System Only		48
Front & Rear Systems		84
Vans
Front System Only		48
Front & Rear System		72
Astro & Safari
Front System Only		32
Front & Rear Systems		48

COMPRESSOR OIL REPLACEMENT QUANTITIES

Component

Ounces

Compressor

A-6 Model

10

DA-6 Model

8

R-4 Model ⁽¹⁾

6

⁽¹⁾	Capacity shown is for all models with front system only. For Astro and Safari with front and rear systems, use 9 oz.

COMPRESSOR BELT TENSION (Lbs.) ⁽¹⁾

Application

New Belt

Used Belt

"S" Blazer & Pickups

4-Cyl.

1.9L

157

90

2.2L Diesel

135

79

2.5L

169

90

2.8L V6

146

67

Other Models ⁽²⁾

4.8L 6-Cyl.

145

65-100

V8

Diesel Engine

175

55-100

Gas Engines

145

65-100

⁽¹⁾	Using standard strand tension gauge.

⁽²⁾	Astro and Safari information not available from manufacturer.

COMPONENT OIL REPLACEMENT QUANTITIES

Component

Ounces

Accumulator

⁽¹⁾

Condenser

1

Evaporator

All Other Systems

3

Receiver-Drier

1

⁽¹⁾	On General Motors systems with DA-6 compressor, add 3 ounces; on R-4 compressor, add 2 ounces. On all other models, add amount drained plus 1 ounce.

COOLING SYSTEM CAPACITIES ⁽¹⁾

Application

Quarts (Liters)

"S" Blazer & Pickups

4-Cyl.

1.9L

9.5 (9.0)

2.2L Diesel

Standard

11.5 (11.0)

With H.D. Radiator or A/C

12.0 (11.3)

2.8L

12.1 (11.5)

Blazer & Suburban

5.0 & 5.7L

W/O A/C

17.5 (16.5)

With A/C

18.0 (17.0)

6.2L Diesel

With or W/O A/C

24.3 (23.0)

7.4L

W/O A/C

23.0 (22.0)

With A/C

24.3 (23.0)

Pickup

4.3L V6

With or W/O A/C

10.9 (10.3)

4.8L 6-Cyl.

W/O A/C

15.5 (14.7)

With A/C

16.0 (15.1)

5.0 & 5.7L

W/O A/C

17.5 (16.5)

With A/C

18.0 (17.0)

6.2L Diesel

With or W/O A/C

24.3 (23.0)

7.4L

W/O A/C

23.0 (22.0)

With A/C

24.3 (23.0)

Vans

Astro & Safari

2.5L 4-Cyl.

10.0 (9.5)

4.6L V6

(13.5) (12.8)

All Others

4.3L V6

11.1 (10.5)

5.0L & 5.7L

17.0 (16.0)

6.2L Diesel

Standard Heater

24.3 (23.0)

With Aux. Htr.

25.6 (24.2)

Forward Control Models

School Bus

4.8L 6-Cyl.

13.8 (13.1)

5.7L

15.5 (14.6)

6.2L Diesel

25.0 (23.5)

Motor Home

6.2L Diesel

28.0 (26.4)

7.4L

22.5 (21.2)

⁽¹⁾	All figures shown are actual but may vary + or - 15% due to system variations.