Check Engine Light HELP - Chevrolet Forum - Chevy Enthusiasts Forums

Go Back   Chevrolet Forum - Chevy Enthusiasts Forums > Current Chevy Trucks, SUV's, Crossovers & Vans > Tahoe & Suburban
Log In 

Tahoe & Suburban The power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.

2013 Chevrolet Suburban
Platform: GMT 400, 800, 900
Sponsored by: Dorman

LinkBack Thread Tools Search this Thread
Old 10-01-2012, 01:52 PM
CF Beginner
Join Date: Oct 2012
Location: Brookfield WI
Posts: 3
Default 97' K1500 Check Engine Light P0430 P1406 P0141

I have a 1997 Suburban K1500 5.7 with 174,000miles and the check engine light is on. Transmission has less than 10K on it. I've been reading on this forum since I bought it last week looking for advise but I can't seam to find anyone with the exact issues I have all in the same case. I'm hopping the combination of symptoms and codes will ring a bell with someone here and you can tell me what repair to try first.

P0430 Catalyst Sys Efficiency Below Thresh (Bank 2)
P1406 EGR Valve Pintle Pos Cir.
P0141 Sensor Heater Circ (Bank 1, Sensor 2

The previous owner told me that the check engine light has been on since it had 68,000miles on it and that the garage told him that it would not affect the operation of the engine. At idle the truck runs ever so slightly rough between 500 and 600 RPM. While driving it feels great. But then again this is my wife's kid hauler and I drive a truck with over 240,000miles on it that was not well taken care of most of it's life but hell it was free. What I'm saying is I might not know how the 5.7 Vortec is supposed to run with operating normally.

My QUESTION is. Do I replace the O2 sensors? Is there a way to test them before purchasing a replacements. OR do I need to replace the catalytic converters with what I'm finding out is a whole new system involving two catalyitics and new pipes off the headers. If i have to go to that dual Cat system I assume there are places to hook up more o2 sensors fo before and behind the cat?

Is the P1406 ERG related to this issue?

I'd love to hear what you would do first and what to look for while doing it. Thanks for the advise in advance.

Last edited by rollerdr; 10-02-2012 at 06:29 AM.
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
not check engine light and others and no light in gauges o.valdez New Member Welcome Area 0 12-17-2011 10:46 PM
Check engine light and "Check Traction Control" message redrotor Cobalt 6 04-08-2011 06:47 AM
ets off light and check engine light on psd7.3 Cavalier 2 12-22-2010 08:23 PM
oil light turning into check engine light? 101btp Cavalier 3 11-30-2010 08:36 PM
Engine surging/loping/stumbling and Check engine light!!! 93chevyman Silverado & Fullsize Pick-ups 4 03-12-2010 01:13 PM

1500, 1997, 97, brookfield, check, chevy, code, egr, engine, k1500, light, p1406, pintle, sensor, sububan, wi

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -5. The time now is 01:04 PM.