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We are getting a code that read CAT EVA 02s htr Not sure
we are getting a code that read CAT EVA 02s htr Not sure what it means or how to repair … read more
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If I change my 02 senor is it both sides after the cat. 2003
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1990 Chevy 1500 2wd all original 5.7 700r4......driving over
1990 Chevy 1500 2wd all original 5.7 700r4......driving over 52 mph for 3 min. Triggers my service engine light, when I turn off the ignition and start the truck again light is gone.....I have a feeli… read more
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I have a Service Engine Soon Light, but my cheap scanner
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CHEVY BLAZER: 6 lights flashing EVA, 02S, HTR,CAT, AIR ,EGR 2001
6 lights flashing EVA, 02S, HTR,CAT, AIR ,EGR 2001 CHEVY BLAZER 174 171 CODES ALSO DID TUNE UP NEW AIR MASS AND EGR NEW AIR LINES ALSO WHAT IS THE MEANIONG… read more
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Ive had my 97 tahoe not pass smog engine light on got it to
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99 Tahoe: 4x4..5.7l..idles rough, until getting the rpms..o2 sensors
Have a 99 Tahoe, 4x4, 5.7l. idles rough, until getting the rpms up, codes came up as multiple misfire, o2 sensors in bank 1 and cat. not to standard. Replaced all the o2 sensors and it made the vehicl… read more
Dodge expert
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1998 chevy s10 blazer: idle..it misfires on cyl 1,3,and 5 steady
I have a 1998 chevy s10 blazer. 4.3 vortec. When the truck is at idle it misfires on cyl 1,3,and 5 steady. If I raise the rpm the snap on shows no misfire. I just had the plenum off the other day and … read more
ZZDaryl
ZZDaryl
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10 blazer: check engine..driving down the highway..gas cap..oil change
i have a 92 chevy s-10 blazer and the check engine came on as i was driving down the highway... when i got on smaller roads and hit stoplights it began to hesitate and the engine was running harder an… read more
BigBob
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1998 chevy blazer: few seconds..security light flash..alarm
I have a 1998 chevy blazer and the thing wont stay running but for a few seconds. I replaced just about everything . The security light flash on in off but I dont believe it has any kind of alarm on i… read more
Randall C
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1999 chevy silverado 1500: exhaust..my check engine light..sensors
I have a 1999 chevy silverado 1500 and I got a custom exhaust put on and ever since my check engine light has been on here are my codes, p0141, p0404, p1404, p0122, p0135, p0157, p0405, b1051. Does al… read more
Randall C
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222mk, 97 chevy blazer: check engine..voltage..highway..misfire compon
i have a 97 chevy blazer i recently replaced the rear 02 sensors becuase i had a check engine that the voltage was low...after driving the car in the city for a couple of days and then on the highway … read more
Tim's Auto Repair
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1995 chevy Blazer: it runs great..o2 sensor, fule pump..rotor..cap
I have a 1995 chevy Blazer 4.3L It looses power after driving it for 30 - 40 min. The first 40 min or so it runs great. We have replaced the O2 sensor, Fule pump, fule filter, plugs and wires, rotor a… read more
XSTREAMAUTO
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1998 chevy malibu: lights dim..ir drive also hooked up my scanner
i have a 1998 chevy malibu and its shaking and lights dim when you put it revers ir drive also hooked up my scanner and got a code p1133 h02s bank 1 sen1 insuff. switching? what does that mean what do… read more
Dave Nova
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10 Blazer: vin..cruise..sudden quit workin, i have checked everything
I have a 1998 S-10 Blazer , in the vin it has a W in it an the cruise just all of a sudden quit workin, i have checked everything i could think of an i am dumpfounded..… read more
BigBob
BigBob
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1998 chevy s10: pickup...after..purched a new EGR valve...also
i have a 1998 chevy s10 pickup 4.3 V6 i have asked this question before. i'm still getting a P1404 code.after taking your advice i purched a new EGR valve still getting 1404 code.also i replaced the E… read more
Jesse
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1997 chevy blazer: 4 o2 sensers and convertor..light come bake..reads
i have 1997 chevy blazer change all 4 o2 sensers and convertor !and check eng. light come bake on .put scaner on it and it reads.random misfire-02 circuit high voltage bank2 sensor-02 circuit low volt… read more
techspert
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1994 chevy camaro: 3.4, i replaced o2 sensors and egr valve..solenoids
i get code 13, 76,77 on my 1994 chevy camaro 3.4, i replaced o2 sensors and egr valve, and all three egr valve solenoids, also a brand new cat, why am i still getting these codes? I have a snap on cod… read more
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Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,756 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,642 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,884 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,953 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,836 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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