Chevrolet Tahoe Hybrid owners have reported 5 vehicle speed control related problems since 1996. Table 1 shows the 1 most common vehicle speed control problems. The number one most common problem is related to the vehicle's vehicle speed control (5 problems). For details of each of the problem category, use the links in the table.
| Problem Category | Number of Problems |
|---|---|
| Vehicle Speed Control problems |
Vehicle will sometimes go in reverse when in drive gear and vice versa. Vehicle will die when accelerating from a stop sign, stop light and/or parking lots. Vehicle jerks violently upon acceleration. Suspension pops, stabilitrack service, hybrid system service, brake service all illuminated on dash along with check engine light following the violent jerking and dying upon acceleration.
My 2009 hybrid tahoe accelerates uncontrollably on occasion. The issue arrises commonly in stop-and-go traffic when the hybrid system starts/stops the gasoline engine regularly. I notice in many circumstances when switching gas/electric modes the vehicle lurches forward. The feeling is the same as letting out the clutch quickly on a vehicle with a manual transmission. I have done as much research as I can and it appears the problem points to issues with the transmission fluid pump(s) and/or control modules. When the system operates on the gas engine, the hybrid tahoe's transmission relies on an engine driven hydraulic fluid pump. When the system switches to electric mode, an auxiliary transmission fluid pump turns on, driven by an independent electric motor. The lurch I described results from what I believe to be a failing pump or control module, or a combination of the both which engages gears when it shouldn't. This lurch is rather dangerous as I have had to jump on the brakes many times to avoid rear ending other drivers. I have spoken with several individuals who own, drive or have driven these gmt900 series hybrids (2008-2013 chevy tahoe/silverado hybrids, GMC yukon hybrids, Cadillac escalade hybrids) all individuals have described the dreaded lurch. Some say replacing the electric auxiliary transmission fluid pump solves the problem, others still have lurching issues. One individual who drives a Cadillac escalade hybrid claimed to have actually rear ended someone due to the uncontrollable lurch. As for my personal car, the lurch occurs in stop and go traffic and occurs at least once a week, sometimes more. Thankfully I have not been involved in an accident yet, however I feel one may be imminent. . Read more...
When driving around and at a stop light the engine will go into auto stop. When applying pressure to gas pedal the vehicle will hesitate and then lurch forward. Vehicle will also get a high idle between 1500 rpm and 2200 rpm and fluctuate between those rpms. Also when idling below 1,000 rpms the engine will rev up and down as if pressure is being applied to the gas pedal but there is no pressure being applied at all. Been having this issue for quite sometime and I figured it was just some bad fuel but it has been consistent. Also have no lights illuminated on the dash, no check engine lights or anything. I haven't taken to dealer yet because I am waiting on the supplies for the air bag recall so they can work on the vehicle while replacing the air bag.
Vehicle will jerk uncontrollably at times at parking lot speeds. Vehicle will stall at times when taking off from a stop. Vehicle will accelerate at times by itself witout pressing accelerator. Dealer claims it needs a new battery but cannot replicate problems. I disaggree with dealer and think vehicle is dangerous.
The contact owns a 2008 Chevrolet Tahoe Hybrid. The contact stated that while driving at 40 mph, the vehicle accelerated independently without warning. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 129,000.