98 chevy 1500 4x4 sle changing out the muffler do you need the oxygen sensor?


Asked by Dec 21, 2015 at 02:11 AM about the 1998 GMC Sierra 1500 C1500 SLE Extended Cab LB

Question type: Maintenance & Repair

doyou need the oxygen sensors to keep the truck running when I change out the muffler? or can I remove them and the catalytic muffler?

1 Answer


Yes you need the oxygen sensors and catalytic converter. You can install what is called a cat-back system where everything behind the converter is replaced and if you want you can also install a high flow catalytic converter. Without the O2 sensors your engine will not get the correct air/fuel mixture.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • I have a 2006 gmc 2006 4x4 sierra sle 3 answers

    I took my truck to Chevrolet dealership to have it fixed.. The plugs and wires , intake gaskets changed, 4 02 sensors. Still idling rough and misses a little going down the road once in awhile. T...

    2006 GMC Sierra 1500 SL1 Extended Cab 4WD 6.5 ft. SB


    Maintenance & Repair

  • rough idle, stalling, loss of power. 225 answers

    o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so. I don't think its the torqu...

    1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB


    Maintenance & Repair

  • 2006 sle gmc sierra 5.3. Vin T. 4x4 1 answer

    Having trouble still with my truck. Still run lean and seem to be missing on the the left bank. Ck wires, plugs, injectors,coils, replaced intake gaskets,map sensor, 4 o2 sensors,ck compressions, ...

    2006 GMC Sierra 1500 SLE1 Extended Cab 4WD 5.8 ft. SB


    Maintenance & Repair

  • started stalling and dying when in gear 89 answers

    350 motor 4L60E trans Motor wants to stall while in gear (but doesn't do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. Fuel filter has been replaced an...

    1994 GMC Sierra 1500 C1500 SLE Extended Cab SB


    Maintenance & Repair

  • what size wrench do i use on the oxygen sensor 2 answers

    i need to know what size wrench or socket to use on the oxygen sensor on a 1990 chevy cheyenne pickup it only has one sensor and it is the 4.3 v6 engine

    1990 Chevrolet C/K 1500 Scottsdale Standard Cab SB


    Maintenance & Repair

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
Reputation 4,390
#2 John Saffrahn
John Saffrahn
Reputation 3,070
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 2,690
View All

Related Models For Sale

Used Chevrolet Silverado 1500"
2,380 Great Deals out of 143,345 listings starting at $1,195
Used Ford F-150"
3,177 Great Deals out of 215,801 listings starting at $1,000
Used Dodge Ram 1500"
540 Great Deals out of 13,899 listings starting at $995
Used Toyota Tacoma"
637 Great Deals out of 30,001 listings starting at $2,850
Used Chevrolet Tahoe"
1,043 Great Deals out of 36,533 listings starting at $1,695
Used Ford F-250 Super Duty"
457 Great Deals out of 42,764 listings starting at $1,000
Used GMC Yukon"
547 Great Deals out of 14,666 listings starting at $1,500
Used GMC Sierra 2500"
212 listings starting at $4,999
Used Chevrolet Camaro"
812 Great Deals out of 39,041 listings starting at $2,650

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
18,766 listings starting at $20,851
2016 GMC Sierra 1500 For Sale
74 Great Deals out of 13,583 listings starting at $22,305
2015 GMC Sierra 1500 For Sale
188 Great Deals out of 4,756 listings starting at $15,995
2014 GMC Sierra 1500 For Sale
159 Great Deals out of 4,275 listings starting at $14,899
2013 GMC Sierra 1500 For Sale
84 Great Deals out of 2,639 listings starting at $12,400