Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
full bulletin at NHTSA ↗2008 Saturn Astra electrical problems
severe 17 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
17
Recalls
0
Avg fix
$850
1fire
When does it fail?
Of the 17 electrical complaints filed for the 2008 Saturn Astra, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 8 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
full bulletin at NHTSA ↗This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
full bulletin at NHTSA ↗The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
full bulletin at NHTSA ↗This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2008 Saturn Astra draws complaints across electrical and sensor systems that fail repeatedly. The accelerator pedal sensor stands out: owners report replacing it 5–6 times over just a few years, with failures occurring as soon as one week after installation or stretching to three years. When it fails, the car loses acceleration abruptly and enters reduced power mode, creating immediate traffic hazards. One owner nearly collided with a semi-truck on a highway. Diagnostic code P2138 is cited.
Horn systems fail chronically—pressing the horn button sometimes triggers the radio volume instead. Replacements of the CIM module and wiring harness are temporary fixes; one owner replaced the module, only to have it fail again within a year.
Shift cable breaks leave cars rolling backward while parked because the transmission won't stay in Park. Wheel bearing and ABS sensor failures occur early in ownership and require expensive complete bearing replacement ($800 reported). Starting problems persist for hours, stalling occurs on highways during traffic, and doors lock you inside during rain or snow.
One vehicle caught fire in the under-dash area while driving. Dashboard gauges move erratically on their own. Multiple owners report spending thousands on repairs across different shops without resolving underlying electrical faults, with some suspecting water intrusion damage never properly diagnosed.
Failure modes owners describe
Accelerator Pedal Pressure/Position Sensor Failure
Pedal sensor fails repeatedly, causing abrupt loss of acceleration and severe power loss while driving. The defect creates unpredictable throttle behavior and has resulted in near-collisions with heavy traffic. Owners report replacing the same component 5–6 times over a few years.
When: As early as less than one week of operation; can recur every 6 months to 3 years
Symptoms owners cite: Complete loss of acceleration; Car slows down drastically and suddenly; Check engine light illuminates; Reduced power mode engagement; Erratic throttle behavior (part throttle to wide open throttle with no driver input); Vehicle does not accelerate when pedal is depressed; Loud noise and misfire
Codes mentioned: P2138
Repairs/costs cited: OEM dealer replacement accelerator pedals; wiring harness inspected per TSB 07-06-04-019E
Recalls/TSBs owners mention: TSB 07-06-04-019E addresses wiring harness water intrusion inspection
Horn System Failure (Inoperable Horn)
Horn becomes intermittently or completely inoperable over time. Pressing the horn button activates the radio volume instead. Left steering wheel buttons also become inoperable. Problem is documented as common on Opel and Vauxhall versions of the Astra sold overseas.
When: Occurs intermittently over several years; failure noted at 16,000 miles and recurred within one month
Symptoms owners cite: Horn does not operate; Intermittent horn operation; Horn button triggers radio volume instead; Left steering wheel buttons inoperable; Radio volume lowers and returns to normal on its own
Repairs/costs cited: Replacement of wiring harness and CIM (Comfort Interface Module) module; ECM replacement; CIM clamp repair
Recalls/TSBs owners mention: GM Special Coverage 10276 issued but does not fix problem and has low mileage limits
Wheel Bearing and ABS Wheel Sensor Failure
Right wheel sensor fails, disabling ABS and traction control systems. Due to car design, sensor replacement requires replacement of the entire wheel bearing assembly at substantial cost.
When: Within months of ownership (one incident reported at 68,000 miles)
Symptoms owners cite: ABS light illuminates; Wheel sensor malfunction; ABS system disabled; Traction control system disabled
Repairs/costs cited: Complete wheel bearing replacement required; approximately $800 repair cost reported
Shift Cable Failure
Transmission shift cable breaks or becomes loose, preventing proper gear engagement. Vehicle may roll unexpectedly even when parked in Park position because the shift cable does not hold the transmission selector in place.
When: Intermittent occurrence during operation
Symptoms owners cite: Gear shift is loose and won't catch; Transmission will not engage gears properly; Vehicle rolls backward while parked; Dashboard display shows incorrect gear position (shows Reverse when in Park); Car continues to move while parked
Repairs/costs cited: Shift cable replacement required
Recalls/TSBs owners mention: Saturn Aura had a similar recall for shift cable; GM offered to pay half of repair cost for Astra
Engine Stalling and Starting Failures
Vehicle stalls while driving on highways and during stop-and-go city traffic. Ignition switches off unexpectedly. Starting problems persist for extended periods, requiring 15 minutes to over an hour to start the vehicle.
When: Recurring throughout vehicle ownership; incidents on highways and in traffic
Symptoms owners cite: Vehicle shuts off unexpectedly while driving; Engine stalling; Loss of all power while driving; Difficulty starting the car; Prolonged starting times (15 minutes to over one hour)
Repairs/costs cited: Multiple parts replaced without resolving issue; suspected water flood damage to wiring and electrical components
Door Lock Electrical Failure
Driver's door locks fail to open during wet weather (rain or snow), trapping the occupant inside the vehicle. Creates a serious safety hazard in emergency situations.
When: Occurs during rain or snow conditions
Symptoms owners cite: Driver's door locks and will not open; Cannot exit vehicle in emergency
Rear Door Window Wiring Deterioration
Premature corrosion and deterioration of internal wiring in the rear passenger side door. Fractured wires prevent rear windows from staying up or down reliably.
When: Mileage unknown
Symptoms owners cite: Rear windows will not stay up or down without adjustment; Fractured wiring in door harness
Recalls/TSBs owners mention: Dealer indicated this was not a safety concern
Headlight Burnout and Wiring Issue
Right headlight fails repeatedly and burns out excessively. Low beam wiring issue diagnosed. Mechanic rerouted wiring to draw power directly from battery as a workaround.
When: Recurring throughout ownership
Symptoms owners cite: Right headlight keeps going out; Headlight bulb burns out repeatedly; Low beam diagnostic code present
Repairs/costs cited: Headlight rerouted to draw directly from battery; low beam system issue
Under-Dash Electrical Fire
Vehicle caught fire in the dash and ignition area while owner was driving in city traffic. Extremely fast-moving fire and excessive smoke. Fire originated from the left side of the lower dash area under the steering wheel. Total interior damage to the vehicle.
When: During normal city driving operation
Symptoms owners cite: Smoke coming from under dash; Fire in dash area; Excessive smoke; Flame burst in ignition area
Repairs/costs cited: Total vehicle loss due to fire damage
Dashboard and Gauge Electrical Malfunction
Dashboard lights blink intermittently and instrument gauge needles move erratically (up and down) without driver input.
When: Occurring during vehicle operation
Symptoms owners cite: Dashboard lights blinking; Gauge hand's move up and down without cause; Erratic instrument cluster behavior
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
2008 Saturn astra xr 2dr, 5 speed manual, 98k miles. P2138 code and check engine light has repeatedly occurred, resulting in five replacement accelerator pedals to date, with a sixth pedal required. Accelerator pedals have failed in as little as less than one week of operation, or as long as three years of operation. All pedal assemblies being replaced were OEM dealer parts. Wiring harness…
Had electrical trouble with your 2008 Saturn Astra?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2008 Saturn Astra?
It's a meaningful issue. 17 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 11 complaints that reported odometer mileage, most electrical failures cluster between 70,000 and 108,854 miles, with the median around 78,230. A quarter of owners report trouble before 70,000; a quarter make it past 108,854. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2008/Saturn/Astra.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.