General Motors (NYSE: GM) is expected to report Q2 earnings on Aug. 2. Here's what Wall Street wants to see:

The 10-second takeaway
Comparing the upcoming quarter to the prior-year quarter, average analyst estimates predict General Motors' revenues will contract -2.3% and EPS will wane -48.7%.

The average estimate for revenue is $38.50 billion. On the bottom line, the average EPS estimate is $0.79.

Revenue details
Last quarter, General Motors recorded revenue of $37.80 billion. GAAP reported sales were 4.3% higher than the prior-year quarter's $36.19 billion.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
Last quarter, non-GAAP EPS came in at $0.93. GAAP EPS of $0.60 for Q1 were 66% lower than the prior-year quarter's $1.77 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Recent performance
For the preceding quarter, gross margin was 12.4%, 40 basis points better than the prior-year quarter. Operating margin was 4.5%, 80 basis points better than the prior-year quarter. Net margin was 3.5%, 580 basis points worse than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $154.17 billion. The average EPS estimate is $3.27.

Investor sentiment
The stock has a two-star rating (out of five) at Motley Fool CAPS, with 804 members out of 997 rating the stock outperform, and 193 members rating it underperform. Among 191 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 144 give General Motors a green thumbs-up, and 47 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on General Motors is outperform, with an average price target of $34.40.