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Found 5 results

  1. I've been recently having starting issues with my 2000 Denali. At first I thought it was the starter so I replaced the starter. It continued to have starting problems sounding like it wasn't getting enough power. So I charged my optima battery overnight and it started fine. As we drive the gauge shows that we are losing power as we are driving. So I figure alternator replace that and the wires for starter and battery. Then I do a parasitic drain test and it shows that I have a draw of 0.04 when my multimeter is set to 10A. Any ideas I'm at the end of my rope with the electrical issues with this truck. Had major BCM for a while finally that was resolved now this.
  2. This past August I bought a 2016 GMC Sierra Elevation Edition with 5 miles on it. During the test drive I noticed it had a much stronger feeling transmission with great takeoff compared to my 2009 GMC Sierra WT. I had to be careful not to spin the tires when pulling out (my 2009 felt like it always pulled out in 2nd gear). After 3-4 weeks of driving the Driver Information Center came up with "Service Stabilitrak" and "Service Trailer Brakes". The dealership said that the Anti-lock brake module was bad and they would have to order one. While I was there, they did the airbag recall which was an ECM flash. Immedately I noticed a loss of power when pulling out of the parking space. It felt as if the transmission was in 2nd gear when pulling out. Even if I manually put the transmission in 1st when pulling out, it still doesn't have the power it did before the flash. The dealership said that GM states the airbag recall would not cause any issue with the transmission or power yet the problem existed immediately after the flash. If I push the gas pedal down about half way it sometimes acts like it goes between gears for a couple seconds. Sometimes it gears down and sometimes it goes right back into the gear it was in. I love the look of the truck and the improved ride, but I would have never bought this truck if it ran like this during the test drive. I have less than 3,000 miles on the truck and regret giving GM a 2nd chance. The transmission went out on my 09 GMC at 42,000 miles. It was out of warranty so I had to pay for the GM certified remanufactured transmission that still felt like it took off in 2nd gear. I traded the 09 off for this one when it only had 46,000 miles. The flash was probably the issue with the 1st one... Here I go again... Has anyone else had this issue? Any resolution without voiding the warranty?
  3. My truck has the 5.7l engine in it and I've had this issue only a handful of times. I was wondering if anyone else has had the same issue or has ideas on what to test. The problem: every blue moon when I start the truck for the first time that day and am driving it feels like its choked out one way or another. I have extremely poor acceleration and seems like it simply doesnt wanna go. It only does this for about a mile or two then goes back to normal and drives fine the rest of the day. It seems to only happen on super humid days, after it rained overnight, or once after a car wash. I haven't really checked anything out yet since it hardley ever happens. My air filter is brand new, and the truck has 106k mi on it.
  4. I've carried my 2006 Suburban (123,000 miles) to three shops and one dealer now to avail. The engine stumbles when accelerating and struggles going up even small hills or bridges and struggles to accelerate. I'm $1600 into this and still have the same problem. I have replaced all 8 coil packs, plugs, wires, upstream and downstream O2 sensors, catalytic converters, Throttle Position Sensor, accomplished compression test (approx 190 lbs on all cylinders), fuel pressure test, dealer cleaned intake, dealer cleaned fuel injection and rails. The private shops kept the truck for three weeks and after not pinpointing the problem advised me to carry it to a dealer. They charged me nothing for labor and discounted the price of the parts. The dealer kept the truck for four days and came up with something different each day. Wanted to charge me nearly six hundred dollars but settled for $260. Dealer advised tearing down the top end (makes no sense as compression is good and holds for over five minutes) for $800 and then another $2000 to reassemble if no problem found. Is this something anyone else has gone through? I use the Suburban to tow a camper but there is no way it has the power to pull itself much less a trailer. I hate to say it but I beginning to lean towards buying a Toyota Tundra if I don't find a solution to this problem soon. I really like my Suburban but I can't afford to throw more money at guessing what the problem is.
  5. Hi all, I've read a few places that lifting your truck could potentially lead to a torque/hp loss and turn your truck into a "dog". Any truth to this? Anybody know how this all works? I mean, I understand that if you put bigger wheels and tires on you'll be making the truck heavier and thereby weighing it down a bit, but are the reported losses of power true? Forgive my ignorance, but does it have anything to do with the air moving under the truck? Why are people reporting power losses after doing suspension lifts?
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