Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING - ENGINE
SB-07-06-04-019A11/01/200810028831General motors: intermittent mil/ses/ dtc p2138 with reduced engine power (repair instrument panel (ip) to body harness connector). 2005-08 gm passengers cars/light duty trucks (incl. saturns). *pe06/01/2009
06060404209/01/2006060604042A10020880Lr4, ly2, l33, lh6, lm7, l59, lc9, lmg, ly5, ls2, lq9, lq4, l76, ly6 throttle actuator control (tac). module codes, mil/ses dtc's p2108, p1516, u0107, reduced engine power. *kb01/25/2007

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
07/07/201122000
 Tl-the contact owns a 2006 gmc sierra 2500 hd (na). the contact was driving approximately 50 mph and smelled burning coolant and the temperature gauge began to rapidly increase. the contact inspected under the hood and noticed the engine overheating with complete loss of coolant. immediately, water was dispensed into the radiator reservoir. the vehicle was taken to an authorized dealer two different times for the same failure. the water pump was replaced twice. the manufacturer was notified and a complaint was filed. the approximate failure mileage was 22,000. kmj
02/13/2010749501
 Truck was parked in garage on a friday night, with no problems. started truck saturday am to back out of the garage to hook up a trailer. i put the truck in reverse, then discovered it wouldn't steer and it wouldn't stop. nearly took out the side of the garage door with the mirror, not to mention, nearly running over one of my kids! i had to engage the emergency brake in order to get the vehicle to stop - half in and half out of the garage. i shut the truck off and restarted it, but nothing changed. called a flatbed truck to take the truck to the dealership. power steering pump had failed and they replaced it. i'm very lucky that i wasn't pulling the trailer when this happened, as i could have been killed, or killed someone else. very scary situation. there had been no trouble with the brakes or steering leading up to this incident - it was just boom - it happened. i purchased this diesel truck new, and have had the dealership do all scheduled maintenance. it has never been involved in any accident, and it is kept inside a garage when not in use. *tr
11/30/200722800301/26/2007
 Tl*the contact owns a 2006 gmc sierra 2500. the fly wheel, which runs with the transmission and helps change gears has had to be replaced three times within two years. while driving approximately 10 mph during the first failure, there was a loud clicking noise and it became louder over time. the dealer stated the vehicle was operating normally. a few weeks later, the noise was much louder; however, a different dealer 2 hours away diagnosed the vehicle and stated that the fly wheel failed. after being repaired 24,000 miles and a year later, the failure recurred. the fly wheel was replaced again and lasted 5 months before it failed. the power steering shaft also needed to be replaced due to it being worn out and failed again nine months later. the failure mileage was 22,800 and the current mileage was 55,000. updated 06/08/09 *bf the power steering gear was leaking due to leaking gear assembly, the hvac blower was inoperative, the flywheel was cracked. the dealer replaced the stripped and broken exhaust studs. updated 06/18/09.*jb
ENGINE AND ENGINE COOLING - COOLING SYSTEM
12/15/201030000
 I have a 2006 gmc sierra 2500 with the lbz duramax and allison transmission. two of the transmission coolant lines began leaking transmission fluid at the crimp ends in dec of 2010. the truck only had 30,000 miles, but was the 36 month warranty period. service under warranty was denied. an on-line search reveals several others have complained about this issue and that the dealer installed oem replacement lines are no better (developing leaks soon after replacement), yet no tsb or corrective action has been issued by gm. leaking transmission fluid is a fire and environmental hazard. the leaks are getting worse.