The engine may develop a misfire due to worn valve seats. This fault will cause the Check Engine Light to illuminate. Replacement of the cylinder head may be required to correct this concern.Google+
Car Problem Reports
Chevrolet Colorado Worn Valve Seats May Cause Engine Misfire
Chevrolet Colorado Problem
Engines Affected: 2.8L 4 Cylinder, 2.9L 4 Cylinder, 3.5L 5 Cylinder, 3.7L 5 Cylinder
Average Mileage: 89,981 mi (31,000 mi - 226,000 mi)
Visitor, 2006 Chevrolet Colorado, 2.8L 4 Cylinder, 62,355 mi
Misfires, rough idle, check engine light stays on.
Visitor, 2005 Chevrolet Colorado, 3.5L 5 Cylinder, 43,000 mi
It seems this problem has been going on for sometime my truck only has 43,000 miles on it it should not have worn valve seats with this low milesage General motors should stand behind fixing it my repair shop says it will cost Around $3,000 to fix it.Allen Weatherman
Visitor, 2004 Chevrolet Colorado, 3.5L 5 Cylinder, 124,605 mi
check engine light solid always -3&5 cylinder misfire code stalls alot when stopping slowing down in traffic i have replaced spark plugs all coils
Visitor, 2004 Chevrolet Colorado, 3.5L 5 Cylinder, 110,000 mi
About 6 months ago my truck started the same misfire problems I've been reading from other owners.
I have taken my truck to be looked at,and I was told that it would be around $2500 to $3000 for repairs.
It's something when you spend $30.000 for a truck and take very good care of it,inside and out.and the dealer you bought it from tells you.he has had many reports about the same problem.Why is there not a recall put in place for this problem.I am the last person to beat up my truck or drive it like a teenager.This issue needs to be addressed to the manufacture and a recall needs to be put inplace.
Visitor, 2004 Chevrolet Colorado, 3.5L 5 Cylinder, 33,500 mi
So, I just failed my emission test. Said my # 5 cylinder is misfiring. I replaced coil and plug with no change. Now I find out that GM has valve seat problems with this engine. If it is a common problem do you think GM will stand behind their engines and repair them or do I have to pay the total amount >|???
Visitor, 2006 Chevrolet Colorado, 2.8L 4 Cylinder, 75,000 mi
Misfire on # 3 cylinder replaced heads.
Visitor, 2006 Chevrolet Colorado, 2.8L 4 Cylinder, 81,000 mi
runs rough at times
I have the exact same situation occurring and it is specific to cylinder #5.
My question is:
- If I live with this for quite some time (some medium-rough idle on occasion), will I dig myself a deeper hole? I'm trying to see how long I can avoid spending the $3,000 w/o any additional repercussions. If the only downside is a rough idle w/o any possiblity of additional damage, then I don't mind the occasional rough idle :)
Visitor, 2007 Chevrolet Colorado, 2.9L 4 Cylinder, 106,000 mi
P0301 code. Cylinder 1 misfire. was not the plugs, coil pack, oxygen sensor, or camshaft position actuator solenoid. I am replacing cylinder head I found a rebuilt on eBay. I will end up doing the work with a friend who knows what he is doing.
Visitor, 2006 Chevrolet Colorado, 37,000 mi
misfire valve seats