When going up a hill, my truck starts to lose power and drastically loses speed. The mass airflow sensor and spark plugs have been replaced. The truck doe have 185,000 miles. The problems started suddenly.The check engine light stays on steady. I got a reduced powers message once when going up a hill.

The above problem was caused by some defective intake valve seats that will suffer excessive wear. It will cause the engine to run rough and the check engine light to stay on with a misfire code. I have low mileage and was wondering what percentage of the 2005 Colorado trucks have had this problem? Since mine has low mileage it may not have started yet. See:

AC not recycling air, and the little light on the recycle button will not go on. everything else is working, but i need the recycle to function.

Does not miss driving down highwY.

i recently had my check engine light come on on my 2008 colorado i hooked it up to machine and it said it was canister purge valve i replaced it and the light still on i tried resetting it but it wont go off i need to get the light off so i can get it inspected

it does sometimes after sitting for 10 mins. I have call the dealer they said they can't do nothing unless it do it for them. we can go in a store and come out and it won't start or turn over. the radio works ,lights, windsheild wipers. please help us .

what can be done now??

have cleand t/b and put in expensive additive to gas but engine slows and cuts off a/c compressor and power sterring

Do I have to take off air bags

Truck won't start once in awhile, fuel pump does not work but wait 30 minute and it will start.

Trick not shifting out of Park. Put foot on brake and shifter moves freely without catching.2005 Chevy Colorado

change out resistor did nothing

the gear shift indicator displayed "lock 1". After a bit, the same display read "AB5"

i didn't disconnect battery cables,i disconnected harness connector c2 of pcm then connected once again then i cranked engine but did not start , started two times only for seconds but scanner showed 0 rpm and crankshaft sensor and ignition coil A trouble codes but engine was shaking. wires of the sensor not cut,i measured voltage of low reference wire it was 0.l v ( i is letter not number) . security lamp and check engine lamp are on while key is on.

is the problem related to the sensor or pcm or passlock need to be relearned. how to know the problem is passlock need relearning and not pcm or sensor ?

thank u
sorry for my bad english

Going to purchase one from the dealer but my truck won't start. I want to know if I could pit the new in and program it myself or do I need to tow it in and have them do it

After waiting 10 to 15 minutes it starts as it normally should

It has 75 k miles with new factor plugs and all new clean filters. Average mpg 12.5 per gal.

Since 2009, the windshield wiper, driver side, would just do 1 sweep of the windshield unexpectedly now and again. The the radio channel button lights wont come on - they change channels but can't be seenat night. The cd player just quit playiing cd's-says reading cd but doesn't. Noe, the a/c quit entirely when switched on fan speed 3 - works on 1,2, and 4,. All of these (except the wiper)are side by side on the dash. What is the problem?

all of a suddeen fan speed 3 quit working. speeds 1,3,4, all fine!

Was told it was my ground wires but I cant locate them???

Also the radio will stay on after I shut the vehicle off and close the door, and the interior light as well for 15 minutes. This was never the case before. If I open the passenger door when the vehicle has just been shut off and close it again everything will shut off like it's supposed to. Some help please?

what do i need to do to fix this

My rear driver side door on my extended cab Colorado has no power going to it whatsoever. The seat belt lock, door jamb sensor and the speaker don't work due to no power. Its more of an annoyance than anything since I don't put anyone in the back seats unless I really have to but it would be great if it worked. This is a permanent problem that never goes away.