2003 GMC Serria I welded a broken muffler bracket I disconnected the neg batt cable. Now after I weled on truck it idles lower than normal. Is there something that could have be damaged from welding


Asked by BlackGMC Nov 22, 2012 at 04:17 PM about the 2003 GMC Sierra 1500HD 4 Dr SLE 4WD Crew Cab SB HD

Question type: Maintenance & Repair

When put in drive or reverse from park it will come close to dying but will stay running?

2 Answers

John Saffrahn

My dads 03 idles at 480-600 when warmed up depending on the humidity and air temp. What is yours idling at?


Ya but it use to idle higher and when you put truck under load it seems like it is too low to be normal. My wife even asked whats wrong with the truck.lol I just checked fuel pressure that comes in at 55psi and I had a 1yr warnaty on mass air flow so I replaced that. While I was there I decide to get new plugs and wires seeing that i just passed 90,000 and I having a issue.

Your Answer

Add photo

Related Questions

  • rough idle, stalling, loss of power. 210 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

  • what other truck seat will fit a 1997 GMC Sierra 2 answers

    Bracket on the bottom of seat is broke and not fixable. Need new seats to replace.

    1997 GMC Sierra 1500 C1500 SLT Extended Cab LB


    Maintenance & Repair

  • 99 GMC Sierra 1500

    1999 GMC 1500 with 5.3. I did some body work disconnected battery and welded cab corner n and after words put bed back on I had to pull truck front a little. Then dummy me forgot to disconnect battery...

    1999 GMC Sierra 1500 SLT Extended Cab SB


    Maintenance & Repair

  • drivers heated seat won't stay off 2 answers

    2003 GMC Yukon SLT 4WD


    Maintenance & Repair

  • what is a good muffler for 92 GMC SONOMA 2.5l 7 answers

    i just brought a 92 gmc sonoma and i want my 4 cyl. to sound like a import

    1992 GMC Sonoma


    Car Customization

Search GMC Sierra 1500HD Questions

GMC Sierra 1500HD Experts

#1 reverend1735
Reputation 40
#2 sg73
Reputation 30
#2 pauljboudreau
Reputation 30
View All

Related Models For Sale

Used GMC Sierra 1500"
713 Great Deals out of 60,163 listings starting at $2,000
Used GMC Sierra 2500HD"
126 Great Deals out of 12,063 listings starting at $4,495
Used Chevrolet Silverado 1500"
1,686 Great Deals out of 134,228 listings starting at $999
Used Ford F-150"
2,225 Great Deals out of 124,212 listings starting at $988
Used Chevrolet Silverado 1500HD"
9 Great Deals out of 295 listings starting at $2,495
Used Chevrolet Silverado 2500HD"
317 Great Deals out of 28,792 listings starting at $2,995
Used GMC Sierra 2500"
3 Great Deals out of 179 listings starting at $4,700
Used Toyota Tundra"
436 Great Deals out of 15,851 listings starting at $1,987
Used Dodge Ram Pickup 1500"
586 Great Deals out of 12,399 listings starting at $499
Used Ford F-250 Super Duty"
425 Great Deals out of 36,999 listings starting at $2,425
Used Jeep Wrangler"
389 Great Deals out of 42,376 listings starting at $1,800
Used Dodge Ram Pickup 2500"
189 Great Deals out of 4,957 listings starting at $2,395
Used Chevrolet Tahoe"
462 Great Deals out of 29,371 listings starting at $2,495
Used Chevrolet Silverado 2500"
9 Great Deals out of 266 listings starting at $3,512