APPLICATION & IDENTIFICATION
| Manufacturer/Model | Engine | ||
|---|---|---|---|
| 1993 | |||
| Chevrolet | |||
| Astro | 4.3L | ||
| Blazer | 2.5L, 4.3L, 5.7L, 6.2L | ||
| Cutaway Van | 5.7L, 6.2L | ||
| Hi-Cube Van | 5.7L, 6.2L | ||
| Passenger Van | 4.3L, 5.0L, 5.7L, 6.2L | ||
| Sport Van | 4.3L, 5.0L, 5.7L, 6.2L | ||
| Suburban | 5.7L, 6.2L | ||
| Pickup | 2.5L, 4.3L, 5.0L, 5.7L, 6.2L | ||
| GMC | |||
| Cutaway Van | 4.3L, 5.7L | ||
| Jimmy | 2.5L, 4.3L | ||
| Magnavan | 5.7L, 6.2L | ||
| Passenger Van | 4.3L | ||
| Rally Van | 4.3L, 5.0L, 5.7L, 6.2L | ||
| Safari | 4.3L | ||
| School Bus | 4.3L, 5.7L | ||
| Sierra | 4.3L, 5.7L, 6.2L | ||
| Pickup | 2.5L, 4.3L, 5.7L, 6.2L | ||
| Vandura | 4.3L, 5.0L, 5.7L, 6.2L | ||
| Yukon | 5.7L | ||
| Oldsmobile | |||
| Bravada | 4.3L | ||
| 1994 | |||
| Buick | |||
| Roadmaster | 5.7L | ||
| Cadillac | |||
| Brougham | 5.7L | ||
| Chevrolet | |||
| Astro | 4.3L | ||
| Blazer | 2.2L, 4.3L, 5.7L | ||
| Camaro | 3.4L, 5.7L | ||
| Caprice | 5.7L | ||
| Corvette | 5.7L | ||
| Cutaway Van | 5.7L | ||
| Hi-Cube Van | 5.7L | ||
| Passenger Van | 4.3L, 5.0L, 5.7L | ||
| Sport Van | 4.3L, 5.0L, 5.7L | ||
| Suburban | 5.7L | ||
| Pickup | 2.2L, 4.3L, 5.0L, 5.7L | ||
| GMC | |||
| Cutaway Van | 4.3L, 5.7L | ||
| Jimmy | 2.2L, 4.3L | ||
| Magnavan | 5.7L | ||
| Passenger Van | 4.3L | ||
| Rally Van | 4.3L, 5.0L, 5.7L | ||
| Safari | 4.3L | ||
| School Bus | 4.3L, 5.7L | ||
| Sierra | 4.3L, 5.7L | ||
| Pickup | 2.2L, 4.3L, 5.7L | ||
| Vandura | 4.3L, 5.0L, 5.7L | ||
| Yukon | 5.7L | ||
| Oldsmobile | |||
| Bravada | 4.3L | ||
| Pontiac | |||
| Firebird | 3.4L, 5.7L | ||
THM 4L60-E APPLICATIONS (1993-94)
| Manufacturer/Model | Body Code | |
|---|---|---|
| Buick | ||
| Roadmaster | "B" | |
| Cadillac | ||
| Fleetwood | "D" | |
| Chevrolet | ||
| Camaro | "F" | |
| Caprice | "B" | |
| Corvette | "Y" | |
| Pontiac | ||
| Firebird | "F" | |
BODY CODES - PASSENGER CARS
| Model | Body |
|---|---|
| Astro & Safari | M,L |
| Blazer & Yukon | K |
| Lumina APV, Silhouette & Trans Sport | U |
| Parcel/Delivery Commercial Van & Motorhome | P |
| Pickup (C/K 10/35) & Sierra | C, K |
| Suburban | C, K |
| S/T Series Blazer, Bravada, Jimmy, Pickup & Sonoma | S, T |
| Van (10/35), Rally Van & Vandura | G |
BODY CODES - TRUCKS
DESCRIPTION
The 4L60-E transaxle uses 2 electric shift solenoids to control transmission upshifts and downshifts. In addition, a pressure control (duty-cycle motor) solenoid controls hydraulic line pressure, and a Torque Converter Clutch (TCC) solenoid controls TCC application. A 3-2 control solenoid modulates hydraulic pressure for the 2-4 band and 3-4 clutch to improve 3-2 downshift. Solenoids are turned on and off by the Powertrain Control Module (PCM).
The PCM receives signals from various transmission sensors. The sensors include engine speed and throttle position, transmission speed, hydraulic pressure and transmission fluid temperature. The PCM has on-board self-diagnostics to help identify any parts or circuits that may need further testing.
The following charts include flow charts, testing information and related wiring diagram. For complete transmission wiring diagrams, see WIRING DIAGRAMS at end of article. For additional engine diagnostic information, see appropriate article in ENGINE PERFORMANCE section.
Note. DIAGNOSTIC AIDS in charts may help diagnose trouble codes when problem cannot be identified through circuit checks. ECM, PCM or TCM may be used in flow charts to describe the control module.