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Prev Professional Automotive Repair Technical Discussions for April 30, 2011
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Open Help Requests for GM
Help Request Answers
1999 Buick LeSabre Custom 3.8L Poor Idle Quality, Surge, Cuts out, Stall VIN: 1G4HP52K0X
ok so a 1999 buick lesabre custom with 3.8L comes in and customer complains of engine light on and vehicle stalling around corners. i scanned the vehicle retrieved current code of p0102 MAF circuit. cleared the code and went for a road test found under moderat... Trouble codes: P0102 (MAF circuit low frequency)
2003 Buick LeSabre Custom 3.8L Poor Idle Quality VIN: 1G4HP52K63
This car came in with a rough idle and erractic fuel gauge reading. We replace the fuel pump . We swapped the egr valve . Also the tps senor, also the map senor, and the mass airflow meter , t there is 5 volts present in all units. But it keep coming back with... Trouble codes: 1635
2006 Cadillac CTS 2.8L Converter Clutch
I am a shop foreman at a chev.cadillac dealership. Working with cadillac line is new for me since i started working at this dealership. I am struggling with a 2006 cts 5l50e transmission that has a tcc surge,chuggle at the 45-55 mph range when tcc control sole...
1994 Chevrolet K2500 5.7L 1-2 Shift VIN: 1GCHK24K4R
1994 k2500 truck 4 speed auto transmission with ECM and electronic shift 5.7k throttle body obdI connection. So here it is... customer complaint of harsh shift 1-2 and he replaced transmission. Now it is here and only code is for knock sensor. all the readings...
1997 Chevrolet K2500 Suburban 7.4L Poor Idle Quality, rough idle VIN: 3GNGK26J1V
this suburban came to us with rough idle concerns,felt like intermittent plug missfire only at idle.we replace plugs with double help,ck'd cap and rotor- someone already'd cam synch offset which was 2 deg.-within limits.we noticed high pitc...
1999 Chevrolet C3500 6.5L no shift VIN: 1GBKC34F3X
trans came in for no reverse. all forward gears were ok. rebuilt trans and installed a transgo sk4l80e at the same time (also installed the transgo actuator feed limit valve in the valve body). replaced rear band, reaction carrier, clutches, low roller, int sp...
2007 Chevrolet Silverado 2500 HD LT 6.0L MIL Lamp on, Goes into limp mode VIN: IGCHC24K67
My fellow IATN members, I am hoping you guys can help me with this problem truck in my shop. This truck has been in 2 times for this problem. The first time it was in the truck was not showing and symptoms of a problem except the MIL illuminated. After testing... Trouble codes: P2134 (App 12 correlation)
2007 Chevrolet Silverado 1500 LTZ 5.3L Electric/heated seats VIN: 1GCEK19J67
Bought this truck new in 97. Driving down the highway one day, I adjusted my electric seat. It moved ahead and would not move back. Fortunately the seat back still operated and I was able to tilt it so I could still drive. I parked the truck for 4 days wonderi...
2004 GMC Sierra 3500 WT 6.6L knocks and smokes VIN: 1GDJK342X4
Any help would be greatly appreciated. I bought this 04 GMC 6.6 LLY with 98k with the understanding it needed an engine, was told noisy. Keeping this truck to use as wrecker for shop. Checked truck out this week. Knocks bad when accelerating and extreme amount...
2001 Pontiac Grand Am SE 2.4L engine VIN: 1G2N52TF1C
Got a bit of a weird one here, customer has a very intermittent no start, has no obvious rhyme or reason, just when it decides not to start it doesn't and every time it has been towed to the shop it has started up at the next key cycle and has run beautifully ...
2004 Saturn Ion-1 2.2L MIL Lamp on, inaccurate fuel gaug VIN: 1G8AJ54F94
Howdy, Need help here folks. i've spent alot of time on this saturn. I'll cut to the chase, Sets Po446 one day after clearing, alldata and OBD say po446 is a direct result of a vent circuit restriction in the Evap system, Ive replaced the vent valve and a faul... Trouble codes: P0446

Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Corvette 5.7L Data Link Connector VIN: 1G1YY32G7X
thanks to everyone once again, i solved that mystery. Turns out the power wire which is supposed to be pin 16, someone previous had moved it to pin 9 clear across the other side of the pin. since the plug was reversed i did not notice it until and pulled the p...
2000 Pontiac Bonneville SE 3.8L Low Trac Light comes on Intermittently VIN: 1G2HX54K8Y
OK sorry to wait till the last minute to close this, had to get the car back one last time (waist some more time) & I viewed all the Wheel Speed Sensors MPH on my Modis while on a lift while twisting & pulling gently on wiring looking for it to register a MPH ...
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