Starter replacement may correct clicking, intermittent no-crank, slow cranking or failed engagement on a 2002–2005 Chevrolet Impala with the 3.4L V6. There is no dedicated trouble code that alone proves this starter motor has failed. Battery weakness, resistance in the positive cable or ground path, a missing start command and mechanical binding can produce similar complaints, so diagnose the cause first.
This repair sequence and its tightening table cover the 2002–2005 Impala 3.4L. The featured starter has broader listed applications, including older Impalas and several other GM vehicles, but their access arrangements and electrical-terminal settings must be checked separately. The 3.8L Impala uses a different starter application and is outside this product guide.
Intermediate DIY; safe vehicle support and electrical diagnosis are essential.
Estimated 1–3 hours after diagnosis, with normal access and serviceable fasteners.
Estimated $70–$180 for one aftermarket starter; tax, tools and cable repairs are extra.
Park on hard, level ground, apply the parking brake and chock the wheels. Switch the ignition off, remove the key and let the exhaust cool. Disconnect and isolate the battery negative cable before removing any starter wiring. A memory saver or charger must not keep the starter circuit energized. Remove rings and metal jewelry. If lifting is needed, use the vehicle’s approved lifting and support points with a suitable jack and matched stands; never work underneath a vehicle held only by a jack. Support the starter as the last bolt comes out. Keep hands, tools and meter leads clear of rotating parts during tests. Stop for unstable support, smoking cables, damaged insulation or a starter that remains engaged.
Featured starter
A-Premium APSTR285, ASIN B0B51112ZN, is a 12V, 1.4 kW, clockwise starter with a nine-tooth pinion. Both the exact retailer listing and manufacturer catalog identify this part number. Quantity is one starter assembly; reference numbers include 6491N, 10465459 and 12563881.
Compare the replacement’s mounting nose, bolt positions, terminals and pinion with the original before installation. The factory 3.4L service information identifies the original PG260 F1 starter as an assembly replacement. Do not assume that mounting bolts, replacement cables or a shim kit are included in the box. Read the selected seller’s current contents and warranty terms before ordering.
View the 3.4L starter assembly
Vehicle compatibility and scope
| Make and model | Listed years | Engine | How this page applies |
|---|---|---|---|
| Chevrolet Impala | 2002–2005 | 3.4L V6 | Repair procedure and tightening table below. |
| Chevrolet Impala | 2000–2001 | 3.4L V6 | Product listing also includes these years; use their own terminal specifications. |
| Chevrolet Monte Carlo | 2000–2005 | 3.4L V6 | Related part application; separate vehicle procedure. |
| Oldsmobile Alero | 1999–2004 | 3.4L V6 | Related part application; separate access procedure. |
| Chevrolet Malibu / Oldsmobile Cutlass | 1997–2003 / 1997–1999 | 3.1L V6 | Different engine/application; do not transfer this repair sequence. |
| Buick Century | 1997–2005 | 3.1L V6 | Related part application; confirm VIN and original starter. |
This table shows the main application and selected related vehicles, not every vehicle in the supplier catalog. The exact listing also contains certain 2.2L, 3.4L and 3.5L applications. Select by model year, engine and original reference together. A model appearing in a listing does not mean every engine offered in that model is covered, and a common replacement starter does not establish common labor or torque specifications.
Find the cause before replacing the motor
No-crank and crank-no-start are different
Observe whether the engine actually turns. If it cranks at normal speed without firing, begin the appropriate engine-management and theft-deterrent diagnosis. If it does not rotate, record whether there is silence, a single click, repeated clicking or grinding. Note hot versus cold behavior. Repeatedly holding the key in Start is not a diagnostic test and can overheat the motor and cables.
Check the battery, junction and ground paths
Inspect the battery case and side-terminal connections before working underneath. An electrical accessory operating normally does not prove the battery is healthy under starting load. Charge and test a suspect battery. Inspect for damaged cable insulation, loose connections and corrosion at the battery, underhood junction and starter.
GM’s single-click diagnostic sequence checks mechanical binding, positive-feed resistance, ground resistance and poor connections before it calls for starter replacement. A starter cannot turn an engine or belt-driven accessory that is mechanically locked. Mechanical checks should be performed with the proper procedure and tools; never reach toward belts during a starting attempt.
A voltage-drop test under cranking load can expose resistance that an unloaded voltage reading misses. Secure leads before the helper turns the key and use the meter’s voltage input. Keep probes away from rotating parts and prevent the positive probe from touching grounded metal. A handheld meter’s current input cannot safely carry starter current. If these tests are outside your experience, obtain electrical diagnosis before purchasing the part.
Check control and security faults
A missing solenoid command requires circuit diagnosis, including the ignition and transmission-range inputs for the actual vehicle. Never bridge the starter terminals or bypass the Park/Neutral interlock. Record any stored codes and security-light behavior before disconnecting the battery. Codes and a single click are clues; neither establishes that the motor itself is defective.
Tools, parts and supplies
| Tool or Supply | Exact Product | Product Link | Purpose and Selection Check |
|---|---|---|---|
| Metric and SAE hand tools | DEWALT DWMT73803, 168-piece, 1/4- and 3/8-inch drives | View mechanic tool set | Sockets, ratchets and extensions for battery, wiring and mounting fasteners. Confirm the actual fastener size; fully seat the socket. Select matching drive sockets for each torque wrench. |
| Mounting-bolt torque wrench | TEKTON TRQ51402, 3/8-inch drive, 10–100 ft-lb | View 3/8-inch torque wrench | For supported mounting-bolt settings within its range. Use a hand ratchet for removal; a torque wrench is a measuring tool. |
| Small-fastener torque wrench | EPAuto 1/4-inch drive click torque wrench, 20–200 in-lb (2.26–22.6 N·m) | View inch-pound torque wrench | For the 2.3 N·m S-terminal nut, 10 N·m BAT-terminal and cover nuts/bolts, and 15 N·m battery connection. The 2.3 N·m setting is near this wrench’s lower limit; use the correct scale and a controlled pull. Confirm readable adjustment before use. |
| Floor jack | ARCAN A20003, 3-ton low-profile steel floor jack | View floor jack | If underbody access requires raising the vehicle. Confirm lift capacity, saddle reach and approved lift points. The jack lifts; it does not provide working support. |
| Jack stands | Pro-Lift T-6906D, 6-ton double-pin stands | View double-pin stands | Use a matched pair; check package quantity, rating label, support height and saddle fit. Do not interpret a pair rating as the capacity of each stand. |
| Wheel chocks | Fasmov solid rubber wheel chocks, 2-pack | View rubber wheel chocks | Prevent rolling on a hard, level surface. Obtain enough chocks to block the grounded wheels in both directions; two packs provide four. |
| Diagnostic voltmeter | INNOVA 3320 auto-ranging digital multimeter | View digital multimeter | For voltage and voltage-drop diagnosis with leads in COM and voltage sockets. Never put the meter’s current input directly across a battery or starter. |
| Eye protection | DEWALT DPG82 Concealer safety goggles, one pair | View safety goggles | Protect eyes from loose debris during underbody work. Keep away from battery acid and wear appropriate work clothing. |
| Side-terminal cleaning | Lisle 11400 Side Terminal Battery Cleaner | View side-terminal cleaner | For original-style side battery contacts and cable ends. Clean only with power isolated; prevent conductive debris reaching exposed positive connections. |
| Mounting hardware or shims — conditional | Vehicle-correct starter bolts, terminal nuts and original shims, if fitted | Select by VIN and starter instructions | Retain correct original hardware and shim positions. Replace damaged parts with application-correct items; no generic shim stack or bolt substitution. |
Both torque ranges are needed. The large mounting bolts use a foot-pound-range tool; the small S-terminal connection is only 2.3 N·m. Use correctly fitting sockets and extensions without imposing sideways load on the studs. The tool list is not a claim that every socket in the kit is needed. Confirm head sizes directly on the vehicle and keep original hardware organized.
DIY and professional cost planning
| Cost category | Estimated allowance | Scope |
|---|---|---|
| Starter | $70–$180 | One aftermarket assembly; not a live retail price. |
| Minor materials or hardware | $10–$30 | Does not cover major cable, battery or ring-gear repairs. |
| Tools already owned | $0 additional | Assumes safe lifting equipment and suitable torque tools. |
| New tools if needed | $250–$600+ | Sockets, lifting/support equipment, meter and torque tools vary. |
| Professional labor | $120–$360 | Illustrative 1–2 hours at $120–$180 per hour; diagnosis can be additional. |
| DIY / shop total | $80–$210 / $200–$570 | Before tax and extra repairs; DIY total excludes new tool purchases. |
Ask a shop whether its quote includes diagnosis, the complete starter, labor and parts/labor warranty. A cheap part cannot compensate for worn ring-gear teeth or a high-resistance cable. Keep the old assembly until fitment and operation have been checked and any return or core requirements are understood.
Tightening specifications: 2002–2005 Impala 3.4L
| Connection | Specification | Important distinction |
|---|---|---|
| Starter mounting bolts | 43 N·m (32 lb-ft) | Hand-start and seat the starter before final tightening. |
| Solenoid BAT terminal nut | 10 N·m (89 lb-in) | Heavy positive battery cable. |
| Solenoid S terminal nut | 2.3 N·m (20.5 lb-in) | Small control-wire connection; easily damaged by excessive torque. |
| Torque-converter cover bolts | 10 N·m (89 lb-in) | Cover fasteners, not torque-converter-to-driveplate bolts. |
| Lower air-deflector bolts | 20 N·m (15 lb-ft) | Restore the correct original fasteners. |
| Battery negative terminal bolt | 15 N·m (11 lb-ft) | Original-style battery and cable hardware. |
These settings are specific to the stated Impala application and factory-style joints. If the supplied replacement has a different terminal design or explicitly different installation instructions, resolve that difference with the supplier before fitting it. Do not apply mounting-bolt torque to electrical studs. Use clean, correct fasteners without added lubricant or threadlocker unless the applicable instructions require it.
Step-by-step replacement
1. Prepare and isolate the electrical supply
Confirm the 3.4L engine, complete diagnosis and compare the replacement label with the original reference. Record radio presets, switch off lamps and accessories, turn the ignition off and disconnect the negative battery cable. Isolate the cable so it cannot spring back against the battery. The positive starter cable must be de-energized before any wrench touches its terminal.
2. Raise, support and uncover the starter
Chock the grounded wheels and establish support on a clean, hard, dry, level surface. Use the model’s designated lifting and support locations with equipment rated for the loaded vehicle. The service instructions identify the center of the front frame for a floor jack; support stands must contact strong, stable structures at the appropriate support locations. Do not use the oil pan, plastic panels or an uncertain contact point. Confirm stability before going underneath.
Remove the lower radiator air deflector and the torque-converter covers, keeping their bolts separate. This is access-cover removal: there is no reason to loosen the bolts that attach the torque converter to the driveplate during a starter replacement. Photograph cable routing and any brackets or shims before disturbing them.
3. Disconnect wiring and remove the starter
Remove the heavy BAT cable and smaller S-terminal lead, protecting the studs from twisting. Support the starter while removing the two mounting bolts, then lower it carefully. Preserve any existing shims in their original positions; the 2002 procedure specifically addresses refitting shims if present. Do not improvise a new shim stack to compensate for a mismatched replacement.
4. Inspect the mounting area
Check the starter flange, locating surfaces and visible ring-gear teeth. A cracked flange, damaged ring gear, burned terminal or stripped mounting thread needs correction before the new starter is installed. Clean loose debris from the mating surfaces without dropping it into the housing. Compare both assemblies side by side, including cable reach and insulation clearance.
5. Fit the replacement and reconnect
Position the starter squarely, restore original shims where applicable and start both mounting bolts by hand. Tighten the mounting bolts to 43 N·m. Reinstall the heavy cable and small control lead in their original orientation, then tighten the BAT nut to 10 N·m and S nut to 2.3 N·m. Restore terminal protection and cable supports. No bare cable terminal should contact the case or nearby grounded metal.
6. Refit covers and restore the battery
Install the torque-converter covers at 10 N·m and lower air-deflector bolts at 20 N·m. Check for trapped wires and remove all tools before lowering the vehicle. Clean oxidation from the disconnected battery contact faces with an appropriate terminal-cleaning tool, keeping debris controlled. Reconnect the negative terminal and tighten its original-style bolt to 15 N·m. Restore presets and the clock as needed.
7. Verify the repair
From the driver’s seat, make a brief starting test with the transmission in a safe position. The starter should engage cleanly and disengage when the engine starts. Stop immediately for grinding, smoke, unusual cable heating or continued starter operation. Check the original symptom under the conditions in which it occurred. If the fault remains, return to battery, cable, control and mechanical diagnosis rather than assuming another starter will solve it.
Common mistakes
The most costly errors are selecting a 3.8L unit for the 3.4L engine, overlooking a corroded side-terminal connection, mixing cover bolts with other hardware, using a mounting-bolt torque on the small S terminal and letting the assembly hang from its wiring. Losing an original shim or leaving an air deflector off can also create a new problem after the electrical repair.
Frequently asked questions
Does the supplied part also list 2000–2001 Impalas?
Yes, for the 3.4L engine, but this article’s procedure is limited to 2002–2005. Earlier electrical-terminal specifications need their own service reference.
Will it fit a 3.8L Impala?
This featured listing’s Impala application is the 3.4L V6. Select the 3.8L starter separately.
Do I need to remove the transmission?
No. The referenced starter procedure removes access covers and the starter itself. Transmission-removal instructions are a different job.
Can the factory starter be rebuilt instead?
The referenced GM procedure treats this original starter as a complete replacement assembly. This guide does not cover internal rebuilding.
Sources and further reading
A-Premium APSTR285 catalog; Exact starter listing and engine-specific applications.
GM service information, reproduced by GM Service Manual Online: 2002 starter procedure; 2003 starter procedure; 2004 starter procedure; 2005 starter procedure.
Battery isolation and terminal torque; Air-deflector service; Torque-converter cover service; Vehicle lifting and support locations; Single-click/no-crank diagnosis; Lisle 11400 specifications.