2008 Jeep Grand Cherokee cruise control problems
severe 16 complaints filed with NHTSA · avg repair $600 · see cruise control across all vehicles →
The failure pattern owners describe
The 16 complaints center on throttle control failures that create genuine safety hazards. Most common: the vehicle accelerates without the driver pressing the gas—sometimes after release of the pedal, sometimes at full throttle while braking or in neutral. Owners report brakes failing to stop the vehicle, engines revving to 4,000 RPM even when stopped, and electronic throttle control warnings. Some incidents happened on new vehicles (one 2008 in 2008; a 2010 incident involving reverse acceleration), while others occurred at 79,000–140,000 miles.
A separate but related issue is engine stalling on highways or local roads—the vehicle loses power and cannot maintain speed, even with full throttle. One owner was stranded at 45 mph on a 65 mph highway and later learned the transmission had failed; the owner suspects an undiagnosed fuel pump issue cascaded into transmission damage.
Throttle sticking is documented: pedal stuck down for seconds or fully open, unrelated to carpet or visible mechanical binding.
The critical pattern: Jeep dealers could not replicate or diagnose most failures, leaving owners unsupported. Throttle body replacement, transmission repair, and camshaft sensor replacement did not resolve the underlying issues. No recalls or technical service bulletins are mentioned.
Same Jeep Grand Cherokee cruise control reports on nearby years: 2005 · 2006 · 2007 · 2011
Failure modes owners describe
Unintended acceleration
Engine accelerates without driver input or after throttle pedal is released. Braking and neutral gear do not consistently stop acceleration. Electronic throttle control warning light may appear. Occurs at various speeds and conditions including stop lights, parking, low-speed turns, and highway driving.
When: Mostly early in vehicle life (2,000–18,000 mi), but also reported at higher mileage (79,000–140,000 mi); one incident on new 2008 model in 2008, another in 2010
Symptoms owners cite: Engine accelerates without driver touching throttle; Throttle remains open after foot lifted from pedal; Brakes do not stop vehicle during unintended acceleration; Engine revs at 4,000 RPM while vehicle is stopped; Electronic throttle control warning light illuminates; Accelerator pedal stuck down for seconds or fully open; Vehicle continues to accelerate in neutral gear
Codes mentioned: Electronic throttle control warning, Both brakes and accelerator reported as depressed simultaneously, Camshaft sensor malfunction (one complaint)
Repairs/costs cited: Dealers unable to replicate failure in most cases; throttle body replacement performed in one case without resolving stalling. One owner paid for transmission repair after prolonged stalling episodes. No successful resolution reported in narratives.
Engine stalling or shutting off while driving
Engine stalls or shuts off unexpectedly during normal highway or local street driving. Vehicle may lose power and be unable to maintain speed. Engine light may appear before shutdown. One case involved repeated stalling after dealer service.
When: Reported at low mileage (early in vehicle operation) and higher mileage (79,000–82,000 mi)
Symptoms owners cite: Engine stalls like running out of gas; Vehicle unable to maintain highway speed (45 mph on 65 mph highway despite full throttle); Engine light appears before shutdown; Engine shifts back and forth during deceleration; Vehicle loses power on highway and becomes stranded
Codes mentioned: Engine light/check engine illumination
Repairs/costs cited: Dealer suspected fuel pump issue but was unsure. One dealer kept vehicle 5 weeks without diagnosing root cause. Another owner had transmission repaired after stalling episodes, though owner suspects fuel pump was root cause. Throttle body was replaced in one case without resolving stalling.
Throttle response delay or failure to accelerate
Accelerator pedal depressed but vehicle hesitates or does not accelerate. Engine RPM may increase without corresponding vehicle acceleration. Separate from unintended acceleration but affects vehicle drivability.
When: Mid to high mileage (35,000–140,000 mi)
Symptoms owners cite: Accelerator pedal depressed with no vehicle acceleration response; Vehicle hesitation when applying throttle pressure followed by sudden acceleration; RPM increase without corresponding speed increase
Repairs/costs cited: No repairs documented in narratives.
Synthesized from 16 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Common questions
How serious is the cruise control problem on the 2008 Jeep Grand Cherokee?
It's a meaningful issue. 16 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $600.
At what mileage does the cruise control typically fail?
Across the 15 complaints that reported odometer mileage, most cruise control failures cluster between 18,152 and 100,000 miles, with the median around 79,000. A quarter of owners report trouble before 18,152; a quarter make it past 100,000. 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 $600 for cruise control 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 cruise control?
No active recalls currently cover cruise control 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.