IDENTIFICATION
Note. Series designations may be substituted for model names throughout this article. See MODEL IDENTIFICATION & TRANSMISSION APPLICATION for series identification.
| Model | Transmission |
|---|---|
| Blazer, Jimmy, Pickup & Sonoma | BW T5, NV1500 & NV3500 |
| Parcel Van | NV3500 & NV4500 |
| Pickup, Sierra, Suburban, Tahoe & Yukon | NV3500 & NV4500 |
MODEL IDENTIFICATION & TRANSMISSION APPLICATION
| Application | Transfer Case Model |
|---|---|
| "T" Series (Blazer, Jimmy, Pickup & Sonoma) | 231 & 233 |
| "K" Series (Pickup, Sierra, Suburban, Tahoe & Yukon | 241, (1) 243, 4401 & 4470 |
| (1) Available on 1996 vehicles only. | |
| (1) | Available on 1996 vehicles only. |
TRANSFER CASE APPLICATION
Note. The following manual transmissions are used on 1995 and 1996 light trucks: NV 1500 5-speed, 5LM60 (NV 3500) 5-Speed, NV 4500 5-Speed, BW T5 5-Speed and Suzuki 5-Spd.
SERVICE INTERVALS
Note. There are 2 light truck emission control classifications: Light Duty and Heavy Duty. Light Duty refers to vehicles weighing up to 8600 lbs. (GVW); Heavy Duty refers to vehicles weighing over 8600 lbs. (GVW).
Transmission
On all Light Duty vehicles, check transmission fluid every 12 months or 7500 miles. On Heavy Duty vehicles, check fluid level every 12 months or 6000 miles. Periodic draining and refilling is not required.
Transfer Case
Check transfer case lubricant every oil change or 12 months. Under severe conditions, check it more frequently.
Check lubricant level at transmission filler plug hole. Lubricant should be level with bottom of filler hole.
Remove filler plug. Check oil level. Lubricant should be level with bottom of filler hole.
RECOMMENDED FLUID
| Application | Fluid Type | |
|---|---|---|
| Transmission | ||
| T5 5-Speed (77mm) | Dexron-III ATF | |
| NV 1500 5-Speed (85mm) | (1) GM Synchromesh Fluid (9985648) | |
| NV 3500 5-Speed (85mm) | GM Synchromesh Fluid (12345349) | |
| NV 4500 5-Speed (109mm) | GM GL-4 Trans. Fluid (12345871) | |
| Transfer Cases | Dexron-III ATF | |
| (1) With 5 percent Friction Modifier (12380672) | ||
| (1) | With 5 percent Friction Modifier (12380672) |
RECOMMENDED FLUID
FLUID CAPACITY
Note. Capacities listed in the following chart are approximations only. Correct fluid level should be determined by level at filler plug hole rather than by amount added.
| Application | Pts. (L) |
|---|---|
| T5 5-Speed (77mm) | 4.8 (2.4) |
| NV 1500 5-Speed (85mm) | 5.7 (2.7) |
| NV 3500 5-Speed (85mm) | 4.2 (2.0) |
| NV 4500 5-Speed (109mm) | 8.4 (4.0) |
TRANSMISSION REFILL CAPACITIES
| Application | Pts. (L) |
|---|---|
| Model 231 & 233 | 2.5 (1.2) |
| Model 241 & 243 | 4.6 (2.2) |
| Model 4401 | 2.9 (1.4) |
| Model 4470 | 6.6 (3.1) |
TRANSFER CASE REFILL CAPACITIES
ADJUSTMENTS
Note. Manual transmissions have no shift rods. Shift lever mounts directly to top of transmission and is not adjustable.