Market Niche:
Targeted at professional mechanics, dealerships, and DIY enthusiasts specializing in Chevrolet Lumina LTZ automatic transmission repair and parts sourcing.
Value Proposition:
Provides essential visual and part number information for specific transmission models widely used in the Chevrolet Lumina LTZ, streamlining the parts ordering process.
Key Features Of Manual:
Detailed exploded views, comprehensive part listings, and specific coverage for 4T60E, 4T65E, and 440-T4 transmissions.
Transmission Components:
Internal transmission parts, torque converter, valve body, clutch packs, planetary gear sets, seals, gaskets, filters, solenoids, electronic components specific to transmission control.
Transmission Variants Technical Focus:
Specific focus on the internal mechanics, hydraulic circuits, and electronic control elements of the 4T60E, 4T65E, and 440-T4 transmissions.
Parts Identification:
Identification of individual transmission components through exploded diagrams.
Assembly Disassembly Guidance:
Visual guidance for component identification during disassembly and assembly.
Parts Interchangeability:
Implicitly provides information for identifying interchangeable parts across the listed transmission models where applicable.
Technical Depth:
Component-level identification and listing for parts procurement and replacement.
Diagnostic Value:
Aids in diagnosing worn or damaged components by visually referencing parts in an assembled or disassembled state.
Common Engine For Lumina Ltz:
Typically the 3.8L (3800 Series II) V6, but could also include 3.1L V6 depending on year and market.
Engine Code Common:
L36 (3.8L naturally aspirated), L67 (3.8L supercharged, less common on LTZ but possible).
Engine Displacement 3.8L:
3.8 Liters (231 cubic inches)
Horsepower 3.8L Approx:
200-205 hp @ 5200-5600 rpm (varies by year and specific engine variant)
Torque 3.8L Approx:
225-230 lb-ft @ 4000-4400 rpm (varies by year and specific engine variant)
Fuel Injection System:
Sequential Multi-Port Fuel Injection (MPFI)
Fuel Type:
Unleaded Gasoline
Primary Transmission Offered:
4-speed automatic (4T60E/4T65E)
Alternative Transmission Options:
While the manual specifies 4T60E, 4T65E, and 440-T4, the 4T65E became the more prevalent upgrade/replacement for the 4T60E in later Lumina models. The 440-T4 (or 4T40-E) was typically found in smaller GM vehicles but is listed here for completeness of the manual's scope.
Transmission Control:
Electronic controls, with features like overdrive, torque converter clutch (TCC) lock-up for improved fuel economy.
Transmission Fluid Type:
Dexron VI Automatic Transmission Fluid (ATF) is the current standard for these transmissions, though older specifications like Dexron III may have been used originally. Always verify with the specific vehicle's VIN and year.
Gear Ratios 4T65E Typical:
1st: 2.92:1, 2nd: 1.57:1, 3rd: 1.00:1, 4th: 0.70:1, Reverse: 2.10:1 (Ratios can vary slightly based on final drive gearing).
NHTSA Front Driver Impact Rating:
Good (for models that were tested, typically within the early 2000s generation)
NHTSA Front Passenger Impact Rating:
Good (for models that were tested)
Traction Control:
Available on some LTZ models.
Anti Lock Braking System ABS:
Standard on LTZ trims.
Airbags:
Frontal airbags, available side-impact airbags for front and rear occupants.
Audio System:
Premium Bose or Delco-Bose sound systems, CD players, cassette decks (early models), optional CD-changer.
Climate Control:
Automatic climate control available on LTZ trims.
Cruise Control:
Standard.
Keyless Entry:
Standard on LTZ.
Onstar Availability:
Available on later models within this generation.
Transmission Fluid Change Interval:
Every 45,000 - 60,000 miles (72,000 - 97,000 km) under normal driving conditions. Refer to owner's manual for severe service intervals.
Transmission Filter Replacement:
Recommended at each transmission fluid change.
Transmission Fluid Capacity 4T60E/4T65E:
Approximately 10-12 quarts (9.5-11.4 liters) for a complete fluid change and fill, but check dipstick after filling. Pan drop and filter change typically requires 4-6 quarts.
Transmission Fluid Specification:
Dexron VI ATF (preferred), or compatible Dexron III/Mercon specifications.
Transmission Filter Part Number Example:
ACDelco GF643 or equivalent (Part numbers can vary by year and manufacturer, this is an example).
Common Transmission Problems:
Slipping between gears, delayed engagement, harsh shifting, P0742 (Torque Converter Clutch Circuit Performance), P0748 (Transmission Solenoid/Circuit Relay), solenoid failures, worn clutch packs, and torque converter clutch issues.
Preventative Maintenance Tips:
Regular fluid and filter changes are crucial. Address any minor leaks promptly. Avoid aggressive acceleration and heavy towing without proper transmission cooling if applicable.
Common Failure Points 4T65E:
3-4 clutch pack, input drum seal rings, rear planetary gear set failure, torque converter solenoid failure.
Chevrolet Legacy:
Chevrolet, a division of General Motors, has a long history dating back to 1911, known for producing a wide range of vehicles from economical compacts to full-size sedans and trucks.
Lumina Generation Context:
The Chevrolet Lumina was produced from 1990 to 2001, based on GM's front-wheel-drive W-body platform. The LTZ trim represented a higher, more upscale offering within the Lumina lineup, often featuring enhanced comfort and convenience features. The specific generation covered by this manual would likely be the second generation (1995-2001).
Production Period:
1995-2001 for the second generation Lumina, with the LTZ trim being introduced later in this period.
Manufacturing Locations:
North America, primarily Canada and the United States.
