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Prev Professional Automotive Repair Technical Discussions for April 11, 2013
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Open Help Requests for GM
Help Request Answers
2004 Buick Century Limited 3.1L no communication VIN: 2G4W552J14
Client drove vehicle into parking lot, several issues going on; Gauges all at 0 or bottom, radio inoperative with a thumping noise coming from the dash, RED Brake lamp on in cluster, shift indiactor is showing the "D" with a circle around it, no matter what ge...
2006 Cadillac SRX 3.6L Steering Pump VIN: 1GYEE63736
Hello first of all just want to say thanks already, i have a 06 cadillac srx with no power steering, check the pump and it is not working. So replaced it, and it works then after 15 min and customer went to the highway and then came back with no power steering...
2000 Chevrolet Express 3500 7.4L Misfire VIN: 1GBM7H1BXY
Quick one for you Good Wrench guys. This is actually a boom truck with a 460 in it. Will eventually set a P0300 code. Can definitely feel a misfire. When you do a power balance, all cylinders seem to effect the same. Has been to five different shops which have... Trouble codes: P0300 (multiple cylinder misfire)
2001 Chevrolet Venture LS 3.4L Stall, MIL Lamp on VIN: 1GNDX03EX1
Vehicle has had p0341 cam pos sensor code for a while, while road testing, cmp pid will intermiitantly cycle between yes & no, sensor and wiring test ok, wiggle test ok, "vibration" test on ecm inconclusive, do you think a intermitantly shorted cmp sensor will... Trouble codes: P0341 (Cam pos sensor)
2011 Chevrolet Silverado 2500 HD LTZ 6.6L air bag light VIN: 1GC1KYE84B
SDM will not clear DTCs, cannot be programmed, and listing DTCs for options the truck does not even have. Now that I have a basic understanding of the Passenger Pressence System, This 2500 HD crew cab truck does not have the option. Numerous DTCs in the follow...
2003 GMC W3500 Forward W3S042 5.7L hydraulic VIN: 4KDB4B1R53
good day, the affected w3500 came in with low brake pedal concern. upon test drive found braking to be near non existant on first application, with one pump bringing the pedal height to normal and braking restored. I went after brake adjustment with no improv...
2004 GMC Sierra 2500 SLE 6.0L heating VIN: 1GTHC23U34
No heat from driver's side ducts. Passenger gets nice and hot but driver's side has no heat. Air switches direction from defrost to center just fine. All suggestions will be appreciated. Thank you in advance.
2005 GMC Canyon Z85 SLE 3.5L Hesitation, Surge, Loss of Power VIN: 1GTDS13675
Problem I have is Low Traction light will come on with the engine loosing all power as if a wheel could be skidding on acceleration, but wheels are not skidding. Trac light will go off if the brake pedal is pressed to where the brake lights come on, or most of...
1992 Saturn SL2 1.9L No Start VIN: 1G8ZK5477N
This customer has an intermittent no start, will stall when driving. When this occurs there is no spark at the plug wire, she has replaced the coil wires and plugs. I cant seem to duplicate the condition thinking crank sensor . Has anyone repaired this concern... Trouble codes: 26 (Egr)

Fixes & Summaries for GM
Fix/Summary Answers
1994 Cadillac Seville SLS 4.6L Heater core VIN: 1G6KY5298R
Thanks to all that took time out of their busy schedule to help out.I checked for proper flow through the small hose that went from the thermostat housing back to the over flow bottle. Flow was great so I eliminated water pump concerns. I removed the A/C accum...
1994 Chevrolet S10 Blazer Tahoe 4.3L Electronic VIN: 1GNDT13W1R
thanks for all who gives me the suggestion finaley i found we put the worng transmission in the truck we put used transmission and they send me the worng transmission two time. Finley i deside to get rebulid old trani ofter that all good thanks again raj
1999 Chevrolet W3500 Tiltmaster W3S042 5.7L Misfire, MIL Lamp on VIN: 5CGCP41R2X
Misfire counters on Cyl 7 and 4 would increase between 1500 and 2500RPM in Park or Nuetral only, then MIL lamp would come on then fail emissions test in Calif (stored P0300 code in ECM). Yet engine ran smooth and HC readings out tailpipe were below 100ppm (no ... Trouble codes: P0300 (Multiple misfire).
2001 Pontiac Grand Prix GT 3.8L MIL Lamp on VIN: 1G2WP52K01
Well believe it or not we installed a cat and released it to the customer. 3 to 4 weeks have went by, called customer and asked if every thing has been good, no light has came back on and car is running good, I have many unanswered questions on this code and ... Trouble codes: P0172.
2006 Saturn Ion-3 2.2L Starter VIN: 1G8AL55F26
The intermittent nature of this issue got the best of me on this one. When I was finally able to get the vehicle to not start consistently I realized the check engine light on the dash was disappearing, key on engine off. This obviously indicated a power inter...
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