Last post on May 20, 2013 at 1:04 PM
You are in the Chevrolet Colorado and GMC Canyon
What is this discussion about?
Chevrolet Colorado, GMC Canyon, Engine, Truck
#668 of 707 Re: Almost 3K into Head #3 on '05 Colorado,Fingers crossed! [pianoman435]
Aug 23, 2012 (9:38 am)
I'm sorry that I misread your original post, pianoman453. Thank you for taking the time to clarify that for me. When you contacted Customer Service, were you issued a case number (71-**********)? Please forward that to us at socialmediagm.com (or the last 8 digits of your VIN) and we will look into this further.
GM Customer Service
Sep 20, 2012 (12:00 pm)
So, i have this recurring code. Bank 1, sensor 1 insufficient switching. So far this is what I have done to it to try to remedy the situation: (2) new oxygen sensors, new exhaust manifold, new feul pressure regulator, new intake air resonator box, new thermostat, exhaust cam position solenoid. When monitoring the front o2 sensor while driving, it switches fine at idle and very light throttle BUT if i accelerate and maintain speed above 1500rpms the o2 sensor stays in the .70-.80 range. I hope someone out there has had experience with this and can tell me what I might be doing wrong(?).
#672 of 707 8 Cylinder Engine
Sep 25, 2012 (1:42 pm)
I'd like to hear from anybody with the 8 cylinder engine. Have you encountered any problems? Does the engine have the cylinder de-activation? What's your fuel mileage? Thank you.
#673 of 707 Re: 8 Cylinder Engine [jpf]
Sep 29, 2012 (3:24 am)
We have a 2010 Colorado crew cab with the 5.3L V8 & 4 speed auto trans. It does not have cylinder deactivation. No problems with the powertrain at all. Haven't tracked the fuel economy, sorry.
#674 of 707 Engine noise
Oct 01, 2012 (4:44 pm)
I have a 2004 Colorado, with the 3.5L. When I start the engine it rattles like it has bad rod bearings. Then when your driving under light throttle it makes a similar sound. I all ready know about the cylinder head issue. I had brought it to the dealer multiple times and was told that my head was ok. But the engine was not making these sounds back then. Plus my truck is past their notice limitations. I had heard some time ago that there was an issue with the timing chains and guides. Could this be the rattle issue that I have? Has anyone else had this simular problem? Or should I be looking elsewhere ? Please Help.
#675 of 707 Re: Engine noise [day4041]
Oct 02, 2012 (4:10 pm)
My 05 3.5L has 90k on it and while i dont have any head issues it has had the supposed timing chain noise for the last 10,000 miles. It runs fine and performance doesn't suffer any but it does get annoying. I found that putting in half a bottle of Lucas synthetic oil stabilizer quites it down some, especially during the winter. If anyone knows of any long term damage from this please share. good luck to all of us!
#676 of 707 Re: Engine noise [sportster911]
Oct 02, 2012 (5:05 pm)
I hate to be the harbinger of doom buddy, but thattruck you have there. Well just make it quiet and run away from it as fast as you can! I had the same pig and traded it in as soon as the warrenty ran out! Problem after problem! The noise your hearing if as you say is the timing chain or the advance/retard mechanisim for the cam, then I`ll tell you if it is not replaced with new parts you will blow the engine. These engines are low clearance heads. They will not clear the piston head when at top dead center. Resulting in vales that are left open whenb the piston comes up will crash threw the tops of the pistons. Let a qualified mechanic look at it. Are you having any codes coming up? Is your engine light flashing on and off by any chance? You can take it to autozone and they will read the codes for you for free. Don`t let them clear it so the dealer or mechanic can see them also. Good luck! I`ve had no problems sense I got rid of mine!
#677 of 707 2005 GMC INTAKE VALVE LEAK
Feb 05, 2013 (2:00 pm)
I bought my truck in 2009 at 60k mi from a Chevrolet dealer and in 2010 had it with a different dealer for a recall. Nobody ever mentioned the worn seal/leak problem. I'm the second owner and obviously never got an extended warranty letter - now in 2013 the truck is at 148k miles and I have the dreaded leakage and rough idling.
Of course, GMC - who should have issued a recall for this - Refuses covering the necessary and expensive work. Has anyone gotten this issue covered by GMC/Chevy once the warranty (7 yrs, 100k) had passed? I'm so mad!!!!!!!!! I would have gladly tested the car for any issues earlier, had i known about it. This is consumer fraud!