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check engine light

  1. Help!!!! P0300 CEL Flashing.

    The 02-09 "How-To" and DIY Section
    I am new to this site. I have checked it out before and thought this would be the best place to look for help. I have a 2002 Envoy. It started missing, I changed plugs and replaced all coil packs. still have a random misfire. The CEL is on and flashing. I know that I can't drive it...
  2. OBD won't read codes, #13 fuse is not blown

    General
    I have the check engine light on. I've hooked up two different readers (that both work fine on any other vehicle) and they both say error when reading my vehicle. The one scanner is a cheapo that is powered by the vehicle. It attempts to read but then errors out. I can only assume that I...
  3. 2006 Check Engine Light and codes

    General
    I have a 2006 Trail Blazer with about 142,000 on it. The check engine light is on so I took it to Auto Zone to find out what is going on. The print out they gave me is kind of faded but it looks like #881 "vacuum leak on engine", #882 "Dirty Throttle Body", #883 "TAC Motor defective". Another...
  4. check engine light

    TrailBlazer / Envoy Chat
    k so ive only looked at it for 5 minutes, but: -my hids wont turn on (hooked to ignition) -when i turned off tb, my mph gauge rapidly went to 60 and rpms were at 3000. Both dials were just out of control. -this went on temporarily ( ! ) -trailblazer drove decent, not really anything too...
  5. Headlights & yellow check engine problems

    General
    I have a TRAILBLAZER 2002 LS - 67000 miles with erratic cases of the headlights and the Yellow CHECK ENGINE SOON ON . The problem is that the headlights turn OFF about after 4 to 5 minutes of driving, not OFTEN BUT around once in two weeks or often if the ambient temperature is below 45 F,-...
  6. reduced engine power, check engine code p1271

    General
    Hey guys, I have been having problems with the reduced engine light coming on and I finally took it to Autozone to get it check. The code it read was p1217 They told me it was the accelerator sensor. Would that be the problem? I remember awhile back I was pressing the gas and my foot slipped...
  7. REP, SES, Stabilitrack lights coming on

    OEM Issues
    About 4 months ago my 06 TB StabiliTrak Indicator Light, check engine light, reduced engine power light started coming on at the same time. With this my TB power is reduced by about 1/2. I cannot figure out why this is happening. If I turn off the TB and remove and replace the gas cap...
  8. Headlights/Relay Switch Issue - Check Engine Light

    General
    Hi there, I've just newly encountered the known issue with the low-beams going out. I switched out the relays and that worked. Now, I have a check engine light on. Both the fan and lights are working. Help!!
  9. Repeated Check Engine Light

    OEM Issues
    I recently bought an '04 Trailblazer with 66,000 miles. Soon after the purchase, the check engine light came on with a p0128 code. Replaced thermostat and sensor, light went off an all went well. Two weeks later, light back on with code p410, secondary blower malfunction. Replaced secondary air...
  10. Need some help!

    General
    First off, I have to say, I have been looking @ this site for a few days & it has been very VERY informative and helped me learn a few things.. I bought my 2004 GMC Envoy used almost 3 years ago, and have had nothing but problems with it, it seems. The only instrument on my dash that works is my...
  11. P1484 '02 TBlzr - Check Engine, etc...

    OEM Issues
    Always glad that I found this forum so long ago! Wife's '02 (148K on it) Tblzr LTZ had the 'Check Engine Light' AND the 'Reduce Engine Power' light at the same time. Checked code and it came out as P1484 (it also had an A after the number). The OIL was down as well, actually seems to have...
  12. [SOLVED] 2006 TB Check engine: misfire cyl 1???

    OEM Issues
    I was taking my girlfriend out for our anniversary (starting good huh?) when I fire up my 06 TB and it started sputtering and jerking in idle. Issues were similar while Oscar Mike .Tried running through last tank of gas then filled up with "89" to see if the quality of fuel was a problem but...
  13. Starting Issues, Check engine Light, Reduced Power Light

    OEM Issues
    Hello All, Have on 06 Envoy with a 5.3l and 52k miles on it.. About 2.5 weeks ago I put Chevron fuel as usual, however not from the same place. I drive for a 3 miles turn off the engine. I watch a ball game, when I come back the engine wont start. I turn the key to the start position but...
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